Mid-Term Study Guide 1

What is a physical change?

• A change that results in the formation of new chemical substances
• A change that occurs without altering the chemical composition of a substance
• A substance made by mixing other substances together
• the ability to do work or cause change

Is hammering wood together to build a house a chemical or physical change?

• chemical
• physical
• both
• none of the above

What is a chemical change?

• A change that results in the formation of new chemical substances
• A change that occurs without altering the chemical composition of a substance
• A substance made by mixing other substances together
• the ability to do work or cause change

Is burning wood a chemical or physical change?

• chemical
• physical
• both
• none of the above

A change in the size, shape, or state of matter.

• chemical change
• physical change
• chemical reaction
• electron change

Which of the following is NOT an example of a physical change?

• crumpled paper
• pencil sharpening
• shrunken clothing
• sour milk

Photosynthesis is an example of a

• physical change
• chemical change
• mixture
• state of matter

Melting a chocolate bar is an example of a(n)  ______________ .

• physical change
• chemical change 
• photosynthesis
• heredity

What is kinetic energy?

• energy that is stored in an object due to its position or composition
• the energy found in foods
• the energy associated with motion
• energy created during a chemical reaction

The total potential and kinetic energy of an object is called

• mechanical energy
• thermal energy
• chemical energy
• electrical energy