Chemical and Physical Changes

How long is the pencil in inches?

What kind of graph is pictured above?

____________________ occurs when a liquid's particles slow down and the substance

Based on the thermometer, what is the temperature of this mixture in Fahrenheit (F)?

________________ occurs when a solid's particles speed up and the substance changes to a liquid.

Using the graph, which object weighed the most?

What do you call the combining of two or more different substances?

  What defines a chemical change?

Think about when you melt butter, is this a chemical or physical change? How does the state of matter change?

Think about a bike that has rusted over time, is this a chemical or physical change? Explain in depth why or why not. Tell me in at least 3 sentences and explain the change.