Classifying Matter

Multiple Choice

What parts of the atom make up most of its mass?

• protons and electrons
• protons and neutrons
• neutrons and electrons
• electrons

Multiple Choice

Atoms are made up of ________________

• energy

• electrons

• subatomic particles

• gasses

Multiple Choice

The number at the top of each square on the periodic table is the ...

• atomic number
• atomic mass
• Chemical Symbol
• Element Name

Multiple Choice

What is the molecular formula for the oxygen molecule shown in the image?

• O2

• O3

• O

• O2-

Multiple Select

In the molecule below, which of the following choices is a subscript? (Select all that apply)

• 3

• 2

• 4

• SO

Multiple Choice

What do the symbols in a chemical formula represent?

• Different compounds

• Different elements

• Different molecules

• Different reactions

Multiple Choice

What does the subscript in a chemical formula indicate?

• The number of atoms of each element

• The type of chemical bond

• The molecular weight

• The state of matter

Multiple Choice

The blue numbers in the image below represent ________

• I don't know, and don't want to try
• coefficients
• subscripts
• none of the answers are correct

Multiple Choice

Is this image showing a homogeneous or a heterogeneous mixture? Image: Cesar salad

• homogeneous

• heterogeneous

Multiple Choice

What is a homogeneous mixture?

• A mixture with uniform composition

• A mixture with different phases

• A mixture that cannot be separated

• A mixture with large particles

Categorize

Options (8)

Found on the periodic table

One kind of atom

More than one kind of atom bonded together

has a chemical formula

made up of elements and compounds in the same space, but not bonded to each other

Categorize each in the correct space.

Element

Compound

Mixture

Multiple Choice

How would you classify Chalk (CaCO₃)

• Element

• Compound

• Homogeneous Mixture

• Heterogeneous Mixture

Categorize

Options (6)

Salad

Pizza

Cereal

Lollipop

Ice tea

Bar of soap

Separate the examples into groups of heterogeneous mixtures and homogeneous mixtures

Heterogenous Mixtures

Homogenous mixtures

Multiple Choice

What type of substance is pictured?

It is CO (Carbon Monoxide)

• element

• compound

• mixture

• solution