Science Warm Up 2/26 (Group A)

A pure substance...

• is an element or a compound
• is an element or a mixture
• is a compound or a mixture
• is a mixture

Beatriz wants to make a mixture out of her bowl of blueberries. Which of the following would turn her bowl of blueberries into a mixture?

• adding more blueberries to the bowl

• adding raspberries to the bowl

• cutting up the blueberries

• mashing the blueberries

Which term refers to matter that could be heterogeneous?

• compound

• element

• mixture

• solution

The image shows the atomic arrangements of four different substances. Which are compounds and why?

• hydrogen because it contains only one kind of atom

• methane because it contains the maximum number of molecules

• water and carbon dioxide because each contains a similar number of molecules

• water, carbon dioxide, and methane because each contains more than one element

What do all elements, compounds and mixtures have in common?

• the are all made of atoms

• they are all made up of pure substances

• they can all be broken down by physical changes

• they can all be found on periodic tables