Chemical vs. Physical Changes

The amount of matter in an object measured in grams or kilograms is called...

• Matter

• Mass

• Volume

• Weight

Which is the best definition of volume?

• The amount of space an object takes up.

• The amount of mass in a given space.

• The number of particles in an object.

• The effect of gravity on an object's mass.

Which of the following is an example of a physical change?

• Burning wood in a campfire.

• A bicycle rusting when it is left outside.

• A chainsaw cutting down a tree.

• Cooking an egg on the stove.

How do you know that setting off a firework is a chemical change?

• The firework changes its phase of matter.

• It is not a chemical change, it's physical.

• It requires energy to make the firework go off.

• It releases gas and creates heat and light.

Tags

NGSS.MS-PS1-2

Which of the following are physical properties of a volleyball?

• It is white in color and has a spherical shape.

• It is white in color and can be lit on fire.

• It is reactive and spherical.

• All of these options are physical properties.

During an experiment, you notice that your materials are on fire. This is because...

• They are reactive, a chemical property.

• They are colorful, a physical property.

• They are flammable, a chemical property.

• They are changing phase, a physical property.

Tags

NGSS.MS-PS1-2

A toy car has a mass of 10 grams and takes up a volume of 5 mL. What is it's density?

• 50 g/mL

• 2 g/mL

• 10 g/mL

• 0.5 g/mL

The neon in a neon sign is an example of a(n)...

• Compound

• Heterogenous Mixture

• Homogenous Mixture

• Element

Iron is an element. When it rusts, it turns into iron oxide (FeO), which is an example of a(n)...

• Compound

• Heterogenous Mixture

• Homogenous Mixture

• Element

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

When you make a salad dressing, you notice that the oil and vinegar separate into different layers. This is an example of a(n)...

• Compound

• Heterogenous Mixture

• Homogenous Mixture

• Element