Bozeman Science Elements

What did the Alchemists search for?

• A way to create water

• The formula for oxygen

• The secret to eternal life

• The philosopher's stone

What is an example of an element?

• Hydrogen peroxide

• Water

• Dirt

• Gold

What is an example of a molecule?

• Water

• Lead

• Silicon

• Uranium

What is an example of a mixture?

• Gold

• Carbon dioxide

• Dirt

• Water

What makes up water?

• One oxygen and one hydrogen atom

• Two oxygen and two hydrogen atoms

• Two oxygen and one hydrogen atom

• One oxygen and two hydrogen atoms

What is true about the average mass of a pure sample of an element?

• It is always equal to the mass of a single atom

• It is different for each element

• It changes with the size of the sample

• It remains the same regardless of the sample size

What analogy is used to explain the concept of average mass?

• Building blocks

• Lego bricks

• Puzzle pieces

• Chess pieces

What does a pure sample of gold consist of?

• Gold molecules

• Gold atoms and oxygen atoms

• Only gold atoms

• Gold and silver atoms

What is the composition of dry ice?

• Solid oxygen

• Solid hydrogen

• Solid carbon monoxide

• Solid carbon dioxide

What differs when comparing water and hydrogen peroxide?

• The ratio of average masses

• The color of the molecules

• The type of atoms

• The temperature at which they freeze