Matter and its properties and changes!

Physical Properties are

• properties that can be observed without changing the identity of the substance

• properties that describe how a substance changes into a completely different substance

A chemical property is

• a property that can be observed without changing the identity of the substance

• a property that is observed during a reaction where the chemical composition of a substance is changed

Which of these is a chemical property?

• melting point

• color

• boiling point

• flammability

One cup of water is left outside for two days when it was checked there was only half a cup left. What happened?

• the water changed from a liquid to a gas which is a physical change

• the water changed from a liquid to a gas which is a chemical change

The color blue is a

• Chemical Property

• Physical Property

The ability for matter to rust is a

• physical property

• chemical property

True or false: You will always see the new substance form in a chemical change!

• true

• false

______ is a sign that a chemical change has taken place

• a change in smell

• a change in color

• the formation of bubbles

• all of the above

Is milk going sour a physical or chemical change?

• Physical

• Chemical

Is sharpening a pencil a physical or chemical change?

• Phsysical

• Chemical