Answers
Explanation:
B and C they are the pure substances
Elements are considered as pure substances . Elements are mostly metals, non - metals and metalloids , so option C is right.
What are Elements ?An element is a substance that cannot be broken down by non - nuclear reaction. Elements considered as a pure substance . All elements are mostly pure substances. A few of them include gold, copper, oxygen, chlorine, diamond, etc. Compounds such as water, salt or crystals, baking soda amongst others are also grouped as pure substances.
An element is a fundamental item that cannot be easily broken in smaller pieces. There are about 100 elements ,each with it's own types of atom. Everything in universe contain an atom of at least on or more than one elements.
Elements are pure substances ,hence option C is correct.
To learn more about elements refer the following link;
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Related Questions
how many significant figures in 1. 19.99 2. 140486 3. 0.0609 3. 5.08 ?
Answers
1. 4 significant numbers
2. 6 significant numbers
3. 3 significant numbers
4. 3 significant numbers
Further ExplanationSignificant numbers are numbers obtained from the measurement results of exact numbers and the last number estimated
1. 19.99
all non-zero numbers are significant numbers , so there are 4 significant numbers
2. 140486
a zero which is located between two non-zero numbers including a significant number , so there are 6 significant numbers
3. 0.0609
a zero in front of a decimal point is not a significant number, so there are 3 significant numbers (6,0 and 9)
4. 5.08
Any zeros between two non-zero numbers are significant, so there are 3 significant numbers(5,0 and 8)
Help me. I need help on these questions and i don’t understand
Answers
[
An atom, which is an isotope of an element, is characterized by -
O having more electrons in its nucleus.
O having more neutrons in its nucleus.
having fewer protons in its nucleus.
having more protons in its nucleus.
Answers
Answer:
gime fre points
Explanation:
fre points for me!
Help PLEASE HELP PLEASE
Answers
Answer:
b. k+
Explanation:
PLEASE HELP ME FAST THANKYOU! :)
What is a substance said to be if it evaporates easily?
A.crystallized
B.condensing
C.changing pigmentation
D.volatile
Answers
Which is not a chemical element needed to build sugars?
Answers
Answer:
Nitrogen
Explanation:
water is a compound with a chemical formula h2o. compare a physical change involving water with a chemical change involving water. how do the changes differ?
Answers
Answer:
Chemical would be water splitting into just hydrogen and oxygen. Where as a physical change would be if it turned to ice.
Explanation:
Someone help me with this plz due in 10 minutes ILl give brainly!!!
Answers
Answer:
which one do u want help with?
Explanation:
to get dry ice to the triple point
PLEASE HELP !!
Answers
which of the following CANNOT be classified as a substance? A. table salt B. air C. nitrogen D. gold
Answers
Answer:
C. Nitrogen
Explanation:
All of the other options are mixtures making them substances, but nitrogen is an element. (while gold is an element, there are often times that gold is mixed with other elements, creating a substance)
if you were conducting an experiment to see whether eating candy makes gerbils fat, what variable might you change?
A:The number of gerbils you feed incorrect answer
B:The amount of candy the gerbils eat incorrect answer
C:The amount of water the gerbils drink incorrect answer
D:The body mass of the gerbils incorrect answer
Answers
Answer:
B
Explanation:
the less candy will be the smallest gerbil and the most candy will be the fatest
Answer:
A) The number of gerbils you feed
Explanation:
If you wanted to test whether eating candy made gerbils fat you would need to fluctuate the amount of candy each group receives to observe whether there was any differnce in weight
Do all systems have Inputs and Outputs? I’m sorry I’m really dumb
Answers
How many grams are there in 1.18 X 1026 atoms of iridium?
Answers
Setting up a dimension analysis type of thing helps tremendously. See what you have to cancel in order to get what you want. We canceled the atoms, then we canceled the moles, and then we got grams.
P2O5 is a covalent compound used to purify sugar. How many atoms of phosphorus does this compound have? How many atoms of oxygen does this compound have?
Lol please help :')
Answers
Answer:Phosphorus: 2
Oxygen:5
Explanation:
Just did it
Answer:
Phosphorus: 2
Oxygen:5
Explanation:
How are hypotheses different from theories?
Answers
Answer:
Explanation:
This is the Difference Between a Hypothesis and a Theory. In scientific reasoning, a hypothesis is an assumption made before any research has been completed for the sake of testing. A theory on the other hand is a principle set to explain phenomena already supported by data.
Which is a common psychological side effect of dementia?
A.optimism
B. loss of brain functionality
C. emotional distress
D.loss of coordination
Answers
Answer:
D is your Answer just did the quiz
( date on bottom when I did the quiz)
Explanation:
3 - 24 - 2021
Pleaseeee help meeeee
Answers
Answer:You have it right the answer is c!
Explanation:
Answer:
c ........................!
What is the buoyancy force on a 15 g object which displaces 60 mL of water? (Remember to change mL of water to grams and grams to kg)
25 N
0.59 N
900 N
0.25 N
Answers
Answer:
0.25
Explanation:
Answer:
.59
Explanation:
Help me ASAP !!!!!!!!!!!
Answers
Answer:
What do you need help on
Explanation:
Write two uses of sublimation process?
Answers
Answer:
Explanation:
Practical Applications of Sublimation
Sublimation and erosion cause ablation, a process that wears down glaciers. Sublimation of iodine may be used to reveal latent fingerprints on paper. Sublimation is used to purify compounds. ... Because dry ice sublimates so readily, the compound is used to produce fog effects.
Plz help! The best answer will be marked as brainliest!
Make a funny sentence of alloys for Magnesium
Here is an example for Mercury, it HAS to for Magnesium
“I love to travel but I do corrode aluminum so we won’t be flying off on adventures in airplanes planes anytime soon”
Answers
Answer:I love to travel however I do erode aluminum so we won't be taking off on undertakings in planes at any point in the near future
Explanation:
Which of the following can be inferred from the diagram above that shows the dependence of potential Energy on the Internuclear distance between two atoms?
A - The atoms form a bond with a bond length of 25 pm
B - The atoms form a bond with a bond length of 75 pm
с - The net force between the atoms is attractive at 25 pm
D - The net force between the atoms is attractive at 75 pm
Answers
Answer:
B - The atoms form a bond with a bond length of 75 pm
From the potential energy diagram of shown, we can infer that the atoms form a bond with a bond length of 75 pm.
When atoms are far away from each other, there exists no interaction whatsoever between the atoms.
However, as the atoms draw closer to each other, the potential energy diagram begins to shift towards an energy minima as we can see from the potential energy diagram.
As the system continues to tend towards this minima, the distance between the atoms decreases. The distance at which the two atoms have the lowest energy is called the bond length.
For this system, such a bond length occurs at 75pm as we can see from the diagram.
Learn more: https://brainly.com/question/24275269
how many of protien consumed by humans around the world is fish?
a) 5 percent
b)20percent
c)4p percent
d)50 percent
Answers
The answer would be 20% (B)
Write the chemical formula for Calcium Dichromate
Ca Cr2O7^2 -
2 2
2 2
1 1
=CaCr2O7^2 -
Is this right? Or does the second part have a bracket
Answers
Answer:
Its right
Explanation:
The chemical formula of calcium dichromate is CaCr207
What is the wavelength, in meters, of yellow light with a frequency of 5.10 x 1014 Hz?
Answers
Answer:
5.88 × 10⁻⁷ m
Explanation:
Speed of Light = Wavelength times Frequency
c = λν
Step 1: Define
c = 3.0 × 10⁸ m/s
ν = 5.10 × 10¹⁴ Hz
λ = unknown
Step 2: Solve for λ
3.0 × 10⁸ m/s = 5.10 × 10¹⁴ Hz · λ
λ = 5.88235 × 10⁻⁷ m
Step 3: Simplify
We are given 3 sig figs.
5.88235 × 10⁻⁷ m ≈ 5.88 × 10⁻⁷ m
The sphere was dropped into water in a graduated cylinder as shown below
Answers
Answer:65 ML
Explanation:
Describe the motion of molecules in each of the three states of matter.
Answers
Answer:
EASSSSSYYY give me a harder question smh
if you want you can give me Brainliest answer lol
Explanation:
A solid’s particles are packed closely together. The forces between the particles are strong enough that the particles cannot move freely.
A liquid is a fluid that conforms to the shape of its container but that retains a nearly constant volume independent of pressure. The volume is definite (does not change) if the temperature and pressure are constant.
Gas molecules have either very weak bonds or no bonds at all, so they can move freely and quickly. Because of this, not only will a gas conform to the shape of its container, it will also expand to completely fill the container.
PLS HELP:)Which situation will cause a stationary object to start moving?
A. A net force greater than 0
B. Balanced forces
C. A net force equal to 0
D. Two forces that cancel each other out
Answers
first proposed that Earth and the other planets orbit the sun.
OA.) Hubble
OB.) Galileo
OC.) Copernicus
OD.) Kepler
ANSWER QUICK PLEASEE
Answers
Explanation:
I just now took the test
If Beryllium has a mass number of 7 and atomic number of 4, how many protons does it have?
Answers
Answer:
4
Explanation:
Answer:
4
Explanation:
So the atomic number is still the proton number and it is always smaller than the atomic mass so the proton number is 4.
HOPE IT HELPED
