CHEMISTRY HIGH SCHOOL

50 POINTS Match each item with the correct statement below:

1.) The fact that matter can be neither created nor destroyed in a chemical change.
2.) Substance that changes to a gas easily at room temperature.
3.) Any chemical reaction that absorbs energy.
4.) Can be observed only when there is a change in composition of a substance.
5.) Any chemical reaction that gives off energy.
6.) The amount of matter contained in a unit of volume.
7.) The type of change in which the identity of substances does not change.
8.) The change of one or more substances into other substances.
9.) Can be observed without any change in the identity of the substance.
10.) Another term for chemical change.

chemical property
physical change
physical property
chemical change
density
law of conservation of mass
chemical reaction
volatile
endothermic
exothermic
energy

Answers

Answer 1
Answer:

Answer:

1) law of conservation of mass

2) volatile

3) endothermic

4) chemical property

5) exothermic

6) density

7) physical change

8) chemical change

9) physical property

10) chemical reaction

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In Ernest Rutherford's gold foil experiments, some alpha particles were deflected from their original paths, but most passed through the foil with no deflection. Which statement about gold atoms is supported by these experimental observations?Gold atoms consist mostly of empty space.

Gold atoms are similar to alpha particles.

Alpha particles and gold nuclei have opposite charges.

Alpha particles are less dense than gold atoms.

Answers

According to ErnestRutherford's gold foil tests, the true statement is that space makes up the majority of gold atoms. The correct option is A.

According to Rutherford's studies, the majority of the alphaparticles encountered free space inside the atom since they mostly went through the gold foil with little to no deflection.

This finding helped scientists comprehend that atoms have a small, compact nucleus at their center and are primarily made up of empty space elsewhere in the atom.

The nuclearmodel of the atom was created as a result of the deflection of several alpha particles, which showed that they came into contact with the positively charged atom's nucleus.

Thus, the correct option is A.

For more details regarding Ernest Rutherford, visit:

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Your question seems incomplete, the probable complete question is:

In Ernest Rutherford's gold foil experiments, some alpha particles were deflected from their original paths, but most passed through the foil with no deflection. Which statement about gold atoms is supported by these experimental observations?

A. Gold atoms consist mostly of empty space.

B. Gold atoms are similar to alpha particles.

C. Alpha particles and gold nuclei have opposite charges.

D. Alpha particles are less dense than gold atoms

Answer:

A

Explanation:

Which of these statements is correct about how the first forms of life appeared on Earth?A.Non-living molecules evolved into living molecules by chemical changes.
B.Reproducing molecules evolved into living organisms by biological processes.
C.Rocks and fossils were transformed into living molecules by biological processes.
D.Atmospheric gases were transformed into living organisms by chemical changes.

Answers

the answer to your question would be A


hope i heled

Answer:

A.  Non-living molecules evolved into living molecules by chemical changes.

Explanation:

List the following in smallest to largest:-Glucose
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Answers

Here you are! The correct sequence is being shown below : 

- Electron
 - Proton
 - Atom
 - Hydrogen Gas
- Amino Acid
 - Glucose
 -Triglyceride
 - Sodium Chloride
 - Carbonic Acid
 - Protein

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Answers

Answer:

the last one is the answer

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Answers

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Answers

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