Matter Basics
Chemical or Physical
Mixtures & Elements
Measurement & Density
Challenge Round
100

What is the smallest unit of matter?

What is an atom?

100

Is melting ice a chemical or physical change?

What is a physical change?

100

What type of mixture has parts you can see?

What is a heterogeneous mixture?

100

Are mass and weight the same?

What is no—mass is the amount of matter, weight depends on gravity?

100

What is the density formula?

What is density = mass ÷ volume? 

200

A group of atoms bonded together is called a...

What is a molecule?

200

What kind of property is flammability?

What is a chemical property?

200

What is the method called where we separate substances using boiling points?

What is distillation?

200

What tool do we use to measure mass?

What is a balance?

200

Give an example of a physical change.

What is cutting paper, melting butter, etc.?

300

A substance made of only one type of atom is a(n)...

What is an element?

300

Color, shape, and size are all examples of what kind of property?

What are physical properties?

300

Give an example of a homogeneous mixture.

What is salt water or air?

300

What’s the formula for volume of a rectangular object?

What is length × width × height?

300

What is the density of water?

What is 1 g/cm³?

400

How do we define a compound?

What is a substance made of two or more elements chemically bonded?

400

Which type of change forms a new substance?

What is a chemical change?

400

Can you separate a compound by physical means?

What is no?

400

If an object has a density greater than water, what will happen?

What is it will sink?

400

What does a molecule of water (H₂O) contain?

What is two hydrogen atoms and one oxygen atom?

500

How is a compound different from a mixture?

What is a compound has chemically combined elements, but a mixture can be separated physically?

500

Give an example of a chemical change.

What is rusting, burning, or baking a cake?

500

How could you separate a mixture of sand and salt?

What is dissolve the salt in water, filter the sand, and then evaporate the water?

500

How do you find the volume of an irregular object?

What is use water displacement?

500

Is air a mixture or compound?

What is a mixture?