Warm Up Week 9 10/15/13 pg. 54-55

What type of mixture is lemonade? Explain how you know.

How are both compounds and elements considered pure

substances?Would Oxygen gas (O2) be

considered a compound, mixture, molecule or atom?

In what form of H2O are the particles moving the fastest??

1.How do you know if 2 chemicals have chemically combined rather than just physically combined?

2.What do the particles of a liquid and solid have in common that is different than particles of a gas?

3.What is the difference between a mixture and a compound?

4.What is a heterogeneous mixture?

What are some examples of heterogeneous mixtures?

5. What is a homogeneous mixture?

Examples?

Warm Up Week 9 10/16-17/13 pg. 54-55

Warm Up Week 9 10/18/13 pg. 54-55

• What sign of a chemical change proves that a green copper penny has gone through a chemical change?

• What type of mixture is sugar water? How do you know?

• Which state of matter is the warmest? Coolest? What about the state of matter makes it warm or cold?

• Groups of two or more atoms of the same element bonded together (like H2, and O2) are called _______________.