Question 1

An ***** is the smallest unit of an element that keeps the properties of that element.

Accepted Answer

atom

Answer

atomic theory

Answer

element

Answer

compound

Question 2

A scientific explanation of the structure of atoms & how they interact with one another is called *****.

Accepted Answer

atomic theory

Answer

atom

Answer

compound

Answer

element

Question 3

The smallest part of matter is an *****.

Accepted Answer

atom

Answer

solution

Answer

element

Answer

compound

Question 4

A ***** is a possible way that something in science works that hasn't been proven yet.

Accepted Answer

theory

Answer

law

Answer

explanation

Answer

rule

Question 5

A theory may ***** as new information is learned.

Accepted Answer

change

Answer

fix

Answer

be right

Answer

stay

Question 6

The small, dense core of an atom is called the *****.

Accepted Answer

nucleus

Answer

proton

Answer

neutron

Answer

electron

Question 7

A ***** is a positively charged particle found in the nucleus of an atom.

Accepted Answer

proton

Answer

electron

Answer

nucleus

Answer

neutron

Question 8

A ***** is a particle with no charge found in the nucleus of an atom.

Accepted Answer

neutron

Answer

proton

Answer

electron

Answer

nucleus

Question 9

Negatively charged particles that speed through the area around a nucleus are *****.

Accepted Answer

electrons

Answer

protons

Answer

nucleus

Answer

neutrons

Question 10

An ***** is a type of matter made of just one kind of atom.

Accepted Answer

element

Answer

atomic theory

Answer

atom

Answer

compound

Question 11

The number of ***** in an element NEVER changes.

Accepted Answer

protons

Answer

nucleus

Answer

electrons

Answer

neutrons

Question 12

The number of***** in an element can be gained or lost.

Accepted Answer

electrons

Answer

nucleus

Answer

protons

Answer

neutrons

Question 13

A ***** is a substance formed by at least 2 types of atoms that are chemically combined.

Accepted Answer

compound

Answer

element

Answer

atomic theory

Answer

atom

Question 14

No two atoms have the same number of *****.

Accepted Answer

protons

Answer

electrons

Answer

neutrons

Answer

nucleus

Question 15

***** & ***** in an atom can change.

Accepted Answer

electrons & neutrons

Answer

protons & electrons

Answer

neutrons & nucleus

Answer

protons & neutrons

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