Physical Science A Test

Is melting iron a physical or chemical change?

• Physical
• Chemical

If energy is lost during a chemical reaction, it is usually lost in the form of...

• potential energy

• radiant energy

• heat energy

• all of the above

The heat energy that is released when fuel is consumed was originally stored in the fuel's...

• chemical bonds

• burning flame

• waste products

• candle wx

The Law of Conservation of Energy states:

• Energy can created or destroyed but not transformed 
• Energy cannot be created or destroyed, it can only transformed
• Energy can't be created, destroyed or transformed

What method would be best to use to separate iron filings and sand?

• use a filter

• use a magnet

• paper chromatography

• pick out the sand

the 3 states of matter are

• solid, matter, liquid

• solid, liquid, the sun

• solid, liquid, gas

• solid, gas, matter

two or more pieces of matter that can be mixed together and easily separated

• solution

• gas

• matter

• mixture

two or more pieces of matter that can be combined, but NOT easily separated

• mixture

• solution

• mass

• matter

anything that has mass and takes up space

• matter

• weight

• solid

• solution

When there is movement, potential and gravitational energy changed to _________ Energy.

• chemical

• potential

• elastic

• kinetic