Answer:
detail is given below
Explanation:
We know that an atom consist of electrons, protons and neutrons. Neutrons and protons are present inside the nucleus while electrons are present out side the nucleus. Electron has a negative charge and is written as e⁻. Proton has positive charge P⁺ and neutron is neutral n⁰ .
The number of electron or number of protons are called atomic number while mass number of an atom is sum of protons and neutrons. The number of protons and electrons are always equal to make the atom electrically neutral and when an atom loses its valance electron the number of protons increases and thus positive charge increased and atom form cation.
Cation formation:
X → X⁺ + e⁻
When an atom gain electron negative charge increase because of more number of electron thus atom form negative ion or anion.
Anion formation:
X + e⁻ → X⁻
1) If an atom loses an electron, it becomes... (positive ion)
2) If an atom gains an electron, it becomes... (negative ion)
3) A hydrogen atom loses an electron. It becomes...(positive ion)
4) A sodium ion (Na) can ionically bond with which?
Sodium ion (Na⁺) can ionically bonded with Cl⁻ , thus both form salt which sodium chloride. Sodium ion can not bonded with hydrogen and potassium because both are also form cation.
5) If an atom gains or loses a neutron, the charge of that atom changes.
The given statement is false because neutron is neutral so when it added or removed from an atom there will be no effect on charge.
6. If an atom gains or loses an electron, the atomic mass of that atom changes.
The given statement is also false because atomic mass is sum of number of neutron and protons. So when electron is added or lost by an atom there will be no effect on atomic mass.
7. If an atom gains or loses a neutron, the atomic mass of that atom changes.
The given statement is true. Atomic mass is sum of number of neutron and protons. So when neutron is added or lost by an atom there will be effect on atomic mass. The atomic mass will be increase or decreased.
8. An atom with valence electrons can covalently bond with another atom.
The given statement is true. The valance electrons of an atom are involved in bonding. It could ionic, covalent or any other type.
Where is the main store of phosphorus ?
Answer:
Phosphorus is most commonly found in rock formations and ocean sediments as phosphate salts.
Answer:
The largest reservoir of phosphorus is in sedimentary rock. It is in these rocks where the phosphorus cycle begins. When it rains, phosphates are removed from the rocks (via weathering) and are distributed throughout both soils and water. Plants take up the phosphate ions from the soil.
what is the biggest difference between the geocentric and heliocentric models of our solar system?
Answer:
The geocentric model says that the earth is at the center of the cosmos or universe, and the planets, the sun and the moon, and the stars circles around it. The early heliocentric models consider the sun as the center, and the planets revolve around the sun.
Explanation:
1. Which of the following statements best describes sunspots?
Sunspot appear and disappear in 24 year cycles.
Sunspots are dark areas of intense electromagnetic activity.
Sunspots are located in the core of the sun.
Sunspots are gaseous clouds that sometimes shoot into space.
Answer:
Sunspots are dark areas of intense electromagnetic activity.
Explanation:
sunspots appear and disappear in 24 year cycles?? I believe
Please help! I’m not sure what kind of experiments to do or say..
Choose a topic that you are interested in and come up with a testable question. Write a procedure
so that you could perform an experiment if you wanted to, or someone else could read it and
follow the steps. Include all the steps of the scientific method. Since you will not be able to
record data or draw a conclusion, for the last two steps please include a description of what each
step involves.
I
Your finished product should include the following:
Experiment Topic:
Experiment Purpose:
Hypothesis:
Identify the independent, dependent, and controlled variables:
These are the materials someone would need if they were going to do this experiment:
Procedures (these are the step by step instructions someone would follow to do this experiment):
This is how the experiment uses the scientific method (include all the steps in the proper
sequence):
Conclusion questions:
What measurements or other method of data collection would you use?
How could you form a statement about your hypothesis based on the data?
Answer:
Why is poop brown?
hypothesis: its really chocolate
1. eat orange foods and collect your poop
2. research how food digest
3. see if ur poop is orange or brown
4. collect ur data
independent variable
Explanation:
conculasion quesion:
how can i better collect my data?
Was ur hypothesis right?
He summoned to his presence a thousand hale and light-hearted friends from among the knights and dames of his court. –"The Masque of the Red Death," Edgar Allan Poe Using context clues, how would you determine the meaning of the word "dames"?
1 ) Look at the surrounding words.
4) Find the word in the dictionary.
3) Ask a friend what the word means.
4) Skip the word entirely.
Answer:
A
Explanation:
bc i got it right
The term "dames" means to look at the words around it, hence option 1 is correct.
What are context clues?Contextual hints are used by proficient readers to decipher the meaning of unfamiliar or challenging words. Students are frequently instructed to determine a word's meaning based on its parts of speech and the surrounding contextual signals, but this can be challenging if they are unsure of what those cues signify.
Information cues known as context clues assist you in deciphering the meaning of new words. Contextual clues are words or phrases that clarify a word's meaning by being used in its surroundings.
understanding contextual signals and successfully utilizing them are crucial for academic achievement.
Therefore, the meaning of the word "dames" is to look at the surrounding words.
Learn more about clues, here:
https://brainly.com/question/29620009
#SPJ2
Which of the following factors would have the least effect on the carrying capacity of an ecosystem?
a.
the total number of organisms
b.
the available water supply
c.
the available food supply
d.
competitive exclusion
Answer:
D competitive exclusion
Explanation:
Answer:
D) competitive exclusion!
Explanation:
edge 2020
Which of the following statements is true?
A) The number of electron shells in an atom is called the atomic number.
B) Boiling and melting points are chemical properties.
C) A molecule of oxygen can have atoms of carbon in it.
D) Elements are substances made of only one type of atom.
Answer:
D) Elements are substances made of only one type of atom.
Explanation:
The only correct choice from the ones given is that "elements are substances made of only one type of atom".
Elements are distinct substances that cannot be split up into simpler substances. Such substances consists of only one kind of atom. There are over one hundred elements known to date.
Atomic number is the number of protons in an atom. Boiling points and melting points are physical properties of a substances. A molecule of oxygen is made up of only oxygen atoms that have been covalently bonded together.What is the basic building block of all living things that cannot be found in anything that is nonliving?
Answer:
the cell is the answer
Explanation:
the smallest unit component that all living beings must have is the cell. In fact some living things can be just one cell. Every living being comes from cells, is made up of one or more cells, and cannot be considered a living organism without at least one
Answer:
Non-living, it's atoms, but the smallest unit component that all living beings that they must have is the cell. It is a proven fact some living things can be just one cell. Every living being comes from cells, is made up of one or more cells, and cannot be considered a living organism without at least one.
Please give me brainliest. :) thanks
A ______ Membrane allows some, molecules to cross
Answer:
Cell theory
Explanation:
Also known as the cell membrane.
Answer:
selectively permeable
Explanation:
just studied this !
1
When placed in water, oil does not dissolve and stays separate. This means oil is_____ and ____.
Answer:
when placed in water, oil does not dissolve and stays separate. this means oil is immiscible and inorganic
Explanation:
When placed in water, oil does not dissolve and stays separate. This means oil is a non-polar and hydrophobic substance.
What are oils?Oils are organic compounds. They are nonpolar chemical substances that are made up of hydrocarbons. They're flammable, and they're extracted from vegetables plants, and animals.
Oils are not soluble in water because they are hydrophobic in nature, doubt a layer of oils is made of made up of a hydrophobic chain that is insoluble in water.
Substances are nonpolar substances are those substances which are insoluble in water. Oil is one of them. Polar substances are dissolved in water because they have hydrophilic ends.
Thus, oil does not dissolve in water and remains separate. Oil is a non-polar, hydrophobic substance, according to this.
To learn more about oils, refer to the below link:
https://brainly.com/question/1967340
#SPJ2
Animal cells and plant cells both contain cell membranes that surround the outside of the cell. Plant cells have an additional outside layer, the cell wall.Select the statement(s) below that explain(s) why plants have the additional outer layer protection.Select ALL that apply.
A. The cell wall solely controls what enters and leaves the cell.
B. The cell wall provides structure for the plant, which allows it to grow up and out to absorb sunlight.
C. The cell wall is flexible and controls what enters and leaves the cell.
D. The cell wall is rigid and firm, limiting the cell shape.
Answer:
B
Explanation:
The cell wall provides structure for the plant, which allows it to grow up and out to absorb sunlight.
Which of the following statements best shows why it would be winter in the
southern hemisphere and summer in the northern hemisphere?
Answer:
If it says something about the Earths axis then that would be the answer
Explanation:
The Earth is on a bit of a tilt.
Which of the following describes the effort arm?
1. The side of the lever on which the force is exerted.
2. The end of the lever that moves the load.
3. The weight or resistance that is being moved.
4. The point where the lever is supported.
Answer:
1
Explanation:
Answer:
The effort arm is the side of the lever on which the force is exerted.
Explanation:
If the man did not eat during the bike ride, why do you think that his blood glucose
level never went below 4.5 mml/L
Answer:
Due to less conversion of glucose into energy.
Explanation:
If the man did not eat during the bike ride, his blood glucose level never went below because there is very little amount energy is used. If a person perform activities such as running and exercise etc, it requires more energy and for that more glucose is converted into energy and glucose level went down while on the bike ride very little amount of energy is needed and for that very little amount of glucose is converted into energy and the glucose level did not went below 4.5 mml/L.
Name the respiratory structure named by fish
Answer:
Fish and other aquatic organisms use gills to take up oxygen dissolved in the water and diffuse carbon dioxide out of the bloodstream. Some insects utilize a tracheal system that transports oxygen from the external environment through openings calledspiracles.
Explanation:
please mark as brainlist answers
Answer:
Fish gills
Explanation:
Fish gills are organs that allow fish to breathe underwater.
what is a typical magnification of an ocular lens?
Answer:
earpeince
Explanation:
How can an abiotic factor like temperature impact the population size of an ecosystem
Answer/Explanation:
Abiotic factors are non-living factors such as temperature, light, water, humidity, acidity, etc.
They strongly impact the ability of organisms to grow and successfully reproduce, and therefore affect the diversity of organisms in any given area.
If the temperature, light, and water availability (for example) are optimal, then species of plants will be able to grow successfully. This increases their populatuion size. Not only that, but it also provides a greater food supply for the animals that eat the plants, so their population will also grow.
Where can you find energy in molecules?
Quick! 40 Points!
Which of the following best describes what happens after a lysosome is made in the rough endoplasmic reticulum of a plant cell?
It becomes embedded in the cell membrane and allows ions to enter the cell.
It is sent to the Golgi apparatus for further processing.
It enters the chloroplast and absorbs light during photosynthesis.
It begins releasing enzymes to break down large molecules.
Answer:
B is correct
Explanation:
I just took the test :)
what is the Atomic Number of a neutral atom that has 5 neutrons and 4 electrons
The atomic number, z, is the number of protons. Assuming that this is an electrically neutral atom -the number of protons equals the number of electrons-, we can say that the atomic number is 4.
----------------------------------------
The representation of an element includes a superior number that indicates the massic number, and an inferior number that indicates the atomic number. We need to know that every atom is identified by its number of protons and neutrons. So,
Representation ⇒ ᵃ X ₀
Where
• X is the element
• a is representing the massic number, which is defined as the sum of the number of protons and the number of neutrons.
• z is the atomic number, which is the number of protons ⇒ represented as
0 above
In electrically neutral atoms, the number of protons equals the number of electrons. This means that the atomic number also indicates the number of electrons.
• We will call n to the number of neutrons, which equals a - z
When protons, neutrons, and electrons get together to form an atom, they lose part of their mass as energy. This is why the atomic weight is slightly inferior to the sum of masses.
So, what you need to know is that
• Nº of protons = Atomic number → z
• Nº of neutrons = Massic number - Atomic number → n = a - z
• Nº of Electrons = Nº of protons = Atomic number → z
Let us analyze the carbon example.
Element representation ⇒ ¹⁴ C ₆
• Massic number = 14
• Atomic number = 6
So, from this information we can assume that
• Nº of protons = Atomic number → 6
• Nº of neutrons = Massic number - Atomic number → 14 - 6 = 8
• Nº of Electrons = Nº of protons = Atomic number → 6
In the exposed example, we have an element, let us name it X with 5 netrons and 4 electrons. And we need to say what is the atomic number, z. In this example we do not need to do perform any calculations, because we already know that the atomic number = number of protons = number of electrons, so
• Nº of neutrons = Massic number - Atomic number → 5
• Nº of Electrons = Nº of protons = Atomic number → 4
from this information we can assume that the massic number is 9, because the massic number = number of protons + number of neutrons.
---------------------------------
Related link: https://brainly.com/question/17274608?referrer=searchResults
Unlike mitosis, meiosis results in the formation of *
A. four genetically identical sperm.
B. four genetically different body cells
C. four genetically different sex cells
D. two genetically identical body cells
Answer:
C
Explanation:
mitosis does body cells while meiosis does sex cells.
Which of the below is required to transport large amounts of substances into and within the cell? This is a multis-select question.
A- Protein pump
B- Concentration gradient
C- ATP
D-Vesico
Answer:
it is protein pump
Explanation:
it is made of cellulose and its component is water loving or what we call hydrophilic thus it can transport large amount of substance into and within the cell
Answer: a-PROTEIN PUMP
Explanation:
Protein pump. – a kind of protein that is capable of pumping out compounds that could pose a threat to the cell. An example is AcrB, a bacterial protein complex that repels a wide range of antibiotics through its ability to capture and pump out a spectrum of structurally diverse compounds.
oxygen is carried from your lungs through your blood to all your cells by a molecule called
A chlorine
B hemoglobin
C reactants
D active metal
Answer:
B.Hemogoblin
Explanation:
these are the cells cariesd by the molecule
Answer:
b: hemoglobin ..........
Diatoms are one of the most common types of phytoplankton in marine habitats. Like plants, diatoms contain chlorophyll and produce glucose from which of the following?
CO2 and O2
CO2 and H2O
O2 and ATP
ATP and H2O
Answer:CO2 and H2O
Explanation:
Diatoms produce glucose from CO2 and H2O.
The sun is the only source of energy in the ecosystem. Plants can trap this energy from the sun through the process of photosynthesis. Photosynthesis is the process by which green plants use energy from the sun to combine carbon dioxide and water to form glucose.
Hence, like plants, diatoms contain chlorophyll and produce glucose from from CO2 and H2O.
Learn more: https://brainly.com/question/1388366
Which members of an ecosystem are part of the energy flow? A. ONLY the living things in the ecosystem B. ONLY the nonliving things in the ecosystem C. Living and nonliving things in the ecosystem D. The energy flow is not dependent on any members of the ecosystem
Answer:
D. The energy flow is not dependent on any members of the ecosystem
Explanation:
The energy flow in an ecosystem is not dependent on any member of the ecosystem. It is the flow of energy through the food chain, energy is passed from members in one trophic level to members in another or the next trophic level. The flow of energy in an ecosystem is important because it helps in maintaining balance in ecology.
6. The jelly-like area between the nucleus and the cell membrane is called the cytoplasm. It helps organelles move throughout the cell.i) What company or place does the cytoplasm resemble in a Cell City? ii)Why do you think so? i)
Answer: cytoplasm is the jelly like substance in between all the other cell organelles
Which biomolecule is Carbon prominent in?
Answer:
carbohydrates
Explanation:
Likewise, carbohydrates, which are made up primarily of molecules containing atoms of carbon, hydrogen, and oxygen, are essential energy sources and structural components of all life, and they are among the most abundant biomolecules on
Answer the following questions:
4. List the 4 membrane components you can find in a cell membrane:
True or False? By the way Estuaries are the spots where ocean and river meet (brackish water) Brainliest!!!
Estuaries have very deep waters.
Estuaries are called the “cradle of the ocean.”
Estuaries are stable environments in terms of tides, salinity and temperature.
Answer:
1. False
2. True
3. True
Explanation:
I'm pretty sure these are right, I hope this helps!
Answer All are true
Explain why primary ecological succession usually takes hundreds or thousands of years.
