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Componds and Mixtures test prep

Total questions: 10

Worksheet time: 10mins

Name
Class
Date
1.

Which chemical formula is a compound?

a)

NaClNaCl

b)

O2O_2

c)

N2N_2

2.

Sodium (Na) is a metal, Chlorine (Cl) is a non-metal what type of bond is created when these two elements are chemically combined?

a)

Ionic Bond

b)

Atomic Bond

c)

Covalent Bond

3.

Identify the pure substance.

a)

Homogeneous mixture

b)

Heterogeneous Mixture

c)

Compound

4.

What type of substance can not be broken down into another substance?

a)

Compound

b)

Mixture

c)

Element

5.

How can mixtures be separated?

a)

Chemical means

b)

Physical means

c)

Boiling

6.

What is the main difference between an element and a compound?

a)

A compound is made of more than one type of atom.

b)

An element contains more atoms.

c)

A compound has chemical bonds.

7.

Which is an indicator that a substance is a mixture?

a)

The size of the substance.

b)

The substance is a liquid.

c)

The substance has separate particles.

8.

What type of bonds does atoms in a gas have?

a)

A covalent bond

b)

An element bond

c)

An ionic bond

9.

What is the chemical formula for salt?

a)

Na2Cl2Na_2Cl_2

b)

C6H12O6C_6H_{12}O_6

c)

NaClNaCl

10.

What type of bonds are created when hydrogen and oxygen bond?

a)

A covalent

b)

An iconic

c)

An element