Chemistry Quiz

What is a chemical element?

• A pure substance made up of one type of atom

• A pure substance made up of two elements

• a mix of substances

Which of these is NOT an element?

• Iron

• Oxygen

• Vegetable oil

• Chlorine gas

Which of these elements is a gas at room temperature? (You may wish to look at your periodic table)

• Helium

• Lithium

• Iodine

• Carbon

What is the name of the state change when we go from solid to gas?

• Solid

• Condensation

• Melting

• Evaporation

• Sublimation

What is the name of the state change when we go from solid to liquid?

• Solid

• Condensation

• Melting

• Evaporation

• Sublimation

What is the name of the state change when we go from gas to liquid?

• Solid

• Condensation

• Melting

• Evaporation

• Sublimation

Sublimation is when the state of change is from solid to a gas,

Dry ice is used at concerts on stage to create the illusion of smoke or fog. Dry ice is solid but changes to a gas at a certain temperature. What is this an example of?

• Condensation

• Melting

• Evaporation

• Sublimation

What is the average mass, in grams, of 2 samples of sulfur with masses of 3.8g and 1.2g?

What is the average mass, in grams, of 4 samples of sulfur with masses of

3.8g

4.2g

3.5g

1.2g?

• 3.2g

• 3.7g

• 3.2

• 3.15