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8th grade unit 2

Authored by Stephanie Martitz

Science

8th Grade

Used 4+ times

8th grade unit 2
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20 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which subatomic particle has a positive charge?

proton

electron

neutron

all particles

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which model of the atom first introduced the idea of a nucleus?

Dalton's model

Thomson's model

Rutherford's model

Bohr's model

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What information does the atomic mass of an element provide?

the sum of electrons and protons in an atom

the difference between the number of protons and electrons

the number of protons and neutrons in an atom

the number of isotopes

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the atomic number of an atom?

the number of protons and neutrons

the number of neutrons

the number of electrons and neutrons

the number of protons

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Two atoms that are isotopes of one another must have the same number of what?

protons

neutrons

electrons

all particles

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the smallest particle representing water?

a hydrogen atom

a molecule

an oxygen atom

diatomic oxygen

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which property is a physical property?

malleable

easy to digest

does not burn

becomes moldy quickly

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