help plssssssssssssssss??

Answers

Answer 1

Answer:

Chemical properties, such as combustibility, are generally observed as the identity of a substance changes and one or more new substances form.

Explanation:

Chemical change involves formation of new substances. Therefore, the correct answer is "Chemical properties, such as combustibility, are generally observed as the identity of a substance changes and one or more new substances form."

Related Questions

aluminum can be used to make soft drink cans because of which property?
A. It can be hammered into a thin sheet (malleability)
B.it can reflect light (shininess)
C.It can be drawn into long wires(ductility)

Answers

Answer:

Explanation:

Malleability describes the property of a metal's ability to be distorted below compression. It is a physical property of metals by which they can be hammered, shaped and rolled into a very thin sheet without rupturing. A soda can's walls are very thin, and therefore express the malleability of aluminum.

a bottle of water contains 20 oz of water. 1oz is equal to 29.57 milliliters. determine how many millimeters are in the bottle of water

Answers

Answer:

591.471 MILLIMETERS

Explanation:

Formula

for an approximate result, multiply the volume value by 29.574

29.574*20=591.471

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Miss Hawaii ; )

Which of these is known as a push or pull upon an object that results from its interaction with another object?

Answers

Answer:

Explanation:

Answer:

force or velocity

Explanation:

I am not sure

the part of an atom that has an overall positive charge is called

Answers

Proton
(P)roton
(P)ositive

Explain Rutherford’s gold foil experiment. What particle did he discover?

Answers

Answer:

this my answer

Explanation:

Rutherford's gold foil experiment showed that the atom is mostly empty space with a tiny, dense, positively-charged nucleus. Based on these results, Rutherford proposed the nuclear model of the atom.

2. Differentiate the types of tectonic plates.

Answers

Answer:

Explanation:

Convergent boundaries: where two plates are colliding. Subduction zones occur when one or both of the tectonic plates are composed of oceanic crust. ...

Divergent boundaries – where two plates are moving apart. ...

Transform boundaries – where plates slide passed each other.

Is it _________
To view _______ eclipse without eve protection.
A.Unsafe, lunar
B.Safe, solar
C.Unsafe, solar
D.Unsafe new moon

Answers

Answer:

unsafe, solar

Explanation:

A lunar eclipse covers the moon which is safe to look at. New Moon, again is simply the moon. However, we should never look at the sun, eclipsed or not!

Answer:

C, it is unsafe to view solar

without eye protection

Someone pls help me I will make you brain

Answers

Answer:

The answer is steam of fossil fuels

Which elements are present in all organic compounds? 1. Hydrogen and oxygen 2. Nitrogen and Carbon 3. Nitrogen and oxygen 4. Hydrogen and Carbon

Answers

Answer:

my answer is num:3 Hydrogen and oxygen.

Choose the answer that best completes the sentence below.

Chopping up a fish is an example of a physical change; _______, grilling a fish is an example of a chemical change.

A. as a result
B. for instance
C. including
D. on the other hand

Answers

most likely going to be “on the other hand”.

Answer:

on the other hand

Explanation:

I think its correct

Using the formula velocity = distance/time, how fast does sound travel in air at 20 degrees C given a distance of 500 m and 3.92 seconds.

A- 3.92
B- 127 m/s
C- 2,941 m/s
D- 746 m/s

Answers

Answer:

B : 127m/s

Explanation:

= 500 ÷ 3.92

= 127.5

What metal is highly reactive and bonds easily with other elements

Answers

Answer: alkali metal

Explanation: ONLY if that is in you suggestions

if not i think this is right

why is each individual produced by sexual reproduction unique?

Answers

Answer:

During sexual reproduction the genetic material of two individuals is combined to produce genetically diverse offspring that differ from their parents. The genetic diversity of sexually produced offspring is thought to give species a better chance of surviving in an unpredictable or changing environment.

What words did the Pilgrims use to describe the new laws?

new and legal

just and equal

godly and fair
In the underlined section, what do the colonists promise to do?

“… and by virtue hereof to enact, constitute and frame such just and equal Laws, … as shall be thought most meet and convenient for the general good of the Colony, unto which we promise all due submission and obedience.”

—Mayflower Compact

Answers

The answers should be (B) - Just and Equal

How do anion formation and valence electrons relate?

Answers

Answer:

Atoms gain valence electrons to form anions.

Explanation:

Someone pls help me I will make you brain

Answers

Answer:

Its the first one

Explanation:

I learned this before

Predict what would happen if plants disappear?

Decomposers will die because they will lose their food source.
All secondary consumers will die because they will lose their food source.
Oxygen will only be available during the daytime.
There will be a limited amount of oxygen in the air.

Answers

Answer:

All secondary consumers will die because they will lose their food source

What is a pure substance that contains atoms of more than one element called?
O a mixture
O a precipitate
O a compound
O a solution

Answers

Answer:

Pure substances made of more than one element are called. compounds. The chemical formula for a molecule of nitrogen is. N2. The balanced equation for the formation of water from the elements hydrogen and oxygen is.

Answer:

A compund

Explanation:

Did test got 100

What is 40g of calcium and 71 g of chlorine

Answers

The answer is 111g of calcium chloride

write down ten laboratory safety rules

Answers

laboratory safety rules:

~Avoid wye contact with all chemics

~ Avoid skin contact with all chemicals

~Always wear safety glasses

~Don't eat in the lab

~Don't drink anything in the lab

~Avoid wearing jewellery

~Don't taste or sniff any chemicals

~Kn0w emergency exit routes

~Never leave containers of chemicals open

~Avoid distracting anyone else working in the lab

Hope this helped you- have a good day bro cya)

1. Follow the instructions

2. Know the Location of Safety Equipment

3. Don't Eat or Drink in the Laboratory

4. Don't Taste or Sniff Chemicals

5. Don't Play Mad Scientist in the Laboratory

6. Dispose of Lab Waste Properly

7. Don't Experiment on Yourself

8. Leave Experiments at the Lab

9. Know What to Do With Lab Accidents

10. Dress for the Lab

1
2. How does a detergent remove a stain?
?

Answers

Answer:

By using various chemical compounds to lift the stain while being gentle enough to keep fabric intact.

Por que los egipcios podrían haber construido pirámides?

Answers

Eran monumentos funerarios, de manera que su principal función era la de acoger tumbas de los faraones para que el viaje al cielo fuese más sencillo

How many chiral carbon atoms are present in a molecule of 2,3,4-trichloropentane?

Answers

Answer:

The answer is 2.

Explanation:

Can you help me plss.. Answer the guide questions to write a sentence summary for photosynthesis. 1. How do plants make food?
CLUE: 2 raw materials
a. taken in from the roots and surroundings
b. taken in from the air of water
2. What act as helpers in the process? CLUE: 2 photosynthetic enzymes
a. obtained from the sun
b. the green pigment of the leaves 3. What are the two products of photosynthesis?
CLUE:
a. tastes sweet
b. the gas we breath

Answers

One:

plants make their own food through a process known as photosynthesis

Two:

Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy and stored in the form of starch which can be used later

Three:

Photosynthesis converts carbon dioxide and water into oxygen and glucose. Glucose is used as food by the plant and oxygen is a by-product.

Answer:

1. b

2. a

3. b

Explanation:

how do ions form bonds, and describe the structure of the resulting compound.

Answers

Answer:

Electrons are transferred between atoms together in the ionic compound. The ions are arranged in a regular repeating pattern in an ionic crystal

Explanation:

Ions electrostatically attracts its counter ions and forms the ionic bond between these ions. The structure of ionic compounds depends on the number of atoms and bonded pair of electrons.

What is ionic bonding ?

Ionic bonds are formed between metals and non-metals. Metals are electron rich and easily loss one or more electrons to the electron deficient non metals.

The loss of electrons make the atom forms a positive ion called cations. The gain of electrons make the formation of anions or negative ions. These positive ions and negative ions attracts electrostatically and forms ionic bond between them.

The structure of ionic compounds depends on the number of bonded atoms, size, presence of lone pairs etc. In solution ionic compounds exists as separate ions.

Find more on ionic bonding :

https://brainly.com/question/11527546

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Contrast the cause of the attraction in ionic bonds
and metallic bonds.

Answers

Ionic bonds are held together by the electrostatic force of attraction between ions, whereas a metallic bond is due to the attraction of metallic cations for delocalized electrons.

the modern model of the atom shows that electrons are:

Answers

Electrons are orbiting the nucleus in the fxed way paths located in solid sphere

Help me out with this question , can someone give me the answer ?
:((

Answers

Answer:

I pretty usre they cause erosion wich makes fresh soil so B.

Explanation:

Which of the following animals is not a first-order prairie consumer? help fast

hawk
gopher
deer
squirrel

Answers

Answer:

The answer would be the hawk.

Explanation:

First-order consumers directly depends on grass or plants for survival.

A hawk gets its food from eating animals.

Again, hope this helps :D

204,900,000,000
How many significant digits are found?

Answers

Answer:

Explanation:

There are 4 significant figures because when there is not a decimal, then only numerical values over 0 are counted. So the numbers counted in sig figs are 2049, and none of the other 0s.

So if it was 204,900,000,000.0, then it would have 12 significant figures.

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