Chemical Changes
When vinegar and baking soda are mixed, bubbles form. This shows what type of change?
What is a chemical change?
True or False: Melting ice creates a new substance.
False - it is still water.
This is a blend of two or more substances that can be separated.
What is a mixture?
Name one sign that a chemical change has occurred.
What are bubbles, color change, new smell, temperature change, or a new substance formed?
You cut a piece of paper into small pieces. Is this a physical or chemical change?
What is a physical change?
This happens when a solid turns into a liquid.
What is a melting?
You toast bread in the toaster. Physical or chemical change?
What is a chemical change?
Name two signs that a physical change has happened.
What are shape change, size change, or change in state of matter?
This is the point at which a liquid turns into a gas.
What is boiling point?
Explain how you know that burning wood is a chemical change.
Because it produces ash, smoke, heat, and a new substance is formed.
Give two real-life examples of physical changes you see every day.
Examples: tearing paper, melting butter, boiling water, breaking a stick.
This process uses paper to separate solids from liquids.
What is filtering?