Physical and Chemical Changes

Which of the following is a chemical property of water?

• Has a Density of 1g/ml

• Boils at 100 degrees Celsius

• Reacts with Sodium (NaCl)

• Dissolves Sugar

A teacher added a small amount of liquid to a test tube containing a liquid solution. A white solid immediately appeared. What conclusion is suggested by the evidence shown.

• Heat is generated

• A precipitate formed indicating a physical change has occurred

• A strange smell occurred

• A precipitate formed indicating a chemical change has occurred

All of the following are evidence of a chemical change EXCEPT

• Change in Temperature

• Change in the stat of matter

• production of gas

• Creation of an odor or smell

Every chemical change results in

• color change

• the formation of a new substance

• formation of a Precipitate

• change in temperature

When dough bakes in an oven, what is happening?

• Chemical change

• Physical Change

• Electric Change

• Spiritual Change

Which of the following options provides evidence of a CHEMICAL change?

• Wood is burned releasing ash and smoke

• Rocks separate when soil is sifted

• Boiling water bubbles when heated

• Salt dissolves in water

Which of the following examples provides evidence of a PHYSICAL change?

• Wood is burned and releases ash and smoke

• Iron rusts over time

• When mixed, baking soda and vinegar form gas bubbles

• Boiling water bubbles when heated

A white tablet is dropped into water. The water becomes cloudy and bubbles are produced. What type of change has occurred?

• Physical change

• Chemical change

• No change

Which observations prove a chemical change occurred

• Dissolving and expected color change

• Mixing and dissolving

• State of matter change and boiling water bubbles

• Unexpected color change and temperature change

Which word matches the definition "two liquids make a solid"

• pre-color

• precipitation

• precipitate

• pretest