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Atoms Review

Chemistry

9th - 12th Grade

Used 19+ times

Atoms Review
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11 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Phosphorous-31 has an abundance of 94.2%. Phosphorous-30 has an abundance of 5.1%. Phosphorous-32 has an abundance of 0.7%. What is the atomic mass of Phosphorous?

30.96
32
23.00
36.90

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

J.J. Thomson used a cathode ray tube to find what particle in the atom?

Proton
Neutron
Electron

3.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Oxygen has 8 protons. What is oxygen's atomic number?

16
8
15.999
0

4.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

A neutral atom of Carbon-13 has ________ electrons and _________ neutrons

13, 13
6, 6
7, 7
6, 7

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Ernest Rutherford discovered that atoms were mostly _________________. 

negatively charged
positively charged
electrons
empty space. 

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Isotopes are atoms of the same element that have the same number of __________ but different number of __________ . Therefore, isotopes of the same element have different masses. 

protons, neutrons
protons, electrons
neutrons, protons
electrons, protons

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is true about a neutral atom?

The number of protons equal the number of neutrons
The number of protons equal the number of electrons
The number of neutrons equal the number of electrons
The number of protons, neutrons, and electrons are all different

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