Chem unit 1- 2 quick check

How many sig figs are there?
100.00

• 1
• 3
• 4
• 5

How many sig figs are there?
4004

• 1
• 2
• 3
• 4

Solve. Round using SigFig math rules.
98.7°C - 97.25°C 

• 1°C
• 1.4°C
• 1.45°C
• 1.450°C

Which is an example of a container filled with a pure substance?

• a glass of iced tea

• a bucket of salt water

• a tire filled with air

• a balloon filled with helium

A combination of substances that are not bonded together is...

• an element

• a compound

• a mixture

• jello

a mixture that appears the same throughout is...

• homogeneous

• heterogeneous

matter is categorized as _____ or _____

• an element or compound

• homogeneous or heterogeneous

• a pure substance or mixture

• a compound or mixture

An element is?

• Chemically combined

• Pure substances that can be broken down

• Pure substances that cannot be broken down into simpler substances

• One or more elements chemically combined.