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Physical Property
Signs of a Chemical Change
Chemical or Physical Change
Physical or Chemical Change or Properties
100
An observable or measurable change, but not a change in identity
What is a physical property?
100

What signs of a chemical change are observed when fireworks explode? (name at least 2)

Production of light

Production of heat

Change in color

Production of a gas

100
Frying an egg
What is chemical change?
100

When a liquid turns into a solid, this is known as what type of property?

What is freezing point?

200

Anything that has mass and takes up space.

What is matter?

200

If I paint a house, the color of the house has changed, however, this is not a sign of a chemical change. Why?

No new substance has formed

200
An ice cube melting.
What is physical change?
200

Making a salad

What is a Physical Change?

300

These are the three states of matter.

What are solid, liquid, and gas

300

What sign of a chemical change happens when you mix baking soda and vinegar?

production of a gas

300
Mowing the lawn.
What is a physical change?
300

What do we mainly use to observe properties?

Our 5 senses

400

The ability to dissolve in a liquid.

Solubility

400

One of the signs of a chemical change is formation of a precipitate. What does this mean?

A solid substance forming out of a liquid reaction.

400
An apple turning brown.
What is a chemical change
400
Matter is never destroyed or created, the mass that you begin with is always the same as the mass you will end with.
What is the law of conservation of mass?
500

Mass divided by volume.

What is density?

500

What are the five most common signs of a chemical change?

  1. Change of Color

  2. Change in temperature

  3. Production of Light

  4. Formation of a Precipitate (Solid)

  5. Formation of a gas

500

Rusting Bicycle

What is a chemical change?

500

The temperature at which a liquid turns into a gas.

boiling point