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Worksheets

Chemical/Physical Changes and Atoms

Total questions: 15

Worksheet time: 8mins

Name
Class
Date
1.

A particle made of 2 or more different atoms that are joined chemically is called

a)

compound

b)

molecule

c)

atom

d)

element

2.

A ____________ change happens when the substance does not change.

a)

density

b)

physical

c)

mass

d)

chemical

3.

The atomic number tells you how many __________ are in an atom

a)

atoms

b)

neutrons

c)

elements

d)

protons

4.

An abbreviation that represents an element is called a _____

a)

symbol

b)

element

c)

compound

d)

molecule

5.

A particle made up of 2 or more atoms that are joined chemically are called _______

a)

compounds

b)

molecules

c)

atoms

d)

elements

6.

Melting chocolate is what kind of change?

a)

physical

b)

chemical

7.

Smoke indicates what kind of change?

a)

physical

b)

chemical

8.

A change in temperature indicates what kind of change?

a)

physical

b)

chemical

9.

Ripping paper is what kind of change?

a)

physical

b)

chemical

10.

A _______________ change happens when the substance changes.

a)

density

b)

mass

c)

physical

d)

chemical

11.

Which part of the atom has a negative charge?

a)

neutron

b)

nucleus

c)

electron

d)

proton

12.

Au is the chemical symbol for

a)

iron

b)

copper

c)

gold

d)

calcium

13.

Water is made of hydrogen and oxygen. Is it a molecule, compound, or both

a)

molecule

b)

compound

c)

both

14.

An _____________ cannot be broken down into a substance by chemical means.

a)

element

b)

compound

c)

molecule

d)

apple

15.

In an atom, the nucleus contains _________

a)

electrons and neutrons

b)

electrons and protons

c)

protons and neutrons

d)

only protons