States of Matter
Name the 3 states of matter.
Solid, liquid, gas
__________ is the change from a SOLID to a LIQUID.
Give an example of a physical change.
answers may vary
TRUE OR FALSE: Energy can be created and destroyed.
FALSE. Energy CANNOT be created or destroyed, only transferred.
A shadow is formed when an ___________ object blocks the light from a light source.
opaque
Give an example of each state of matter.
solid - wood
liquid - water
gas - smoke/steam/oxygen
(Answers may vary)
Describe the change of states when something FREEZES.
liquid to a solid
Give an example of a chemical change.
Energy that cannot be used is called ______________.
TRUE or FALSE: Light travels in curved lines.
False. Light travels in straight lines.
TRUE/FALSE: Liquids take the shape of the container they are poured into.
TRUE
The change in state from a gas to a liquid is _______________.
condensation
Give an example of a physical change you can do to a piece of paper.
Cut, rip, crumble it ....
Name 3 types of energy and give an example of each.
Thermal - fire
Light - sun
Electrical - TV
Sound - radio
Give an example of a translucent object.
Tissue
Piece of paper
A _____ does NOT take the shape of its container.
solid
A puddle 'disappears' on a sunny day.
a. The puddle _______________.
b. What change of state took place?
a. evaporated
b. liquid to a gas
Give an example of a chemical change you can do to a piece of paper.
burn it
Chemical energy stored in the battery transfers to electrical energy and then light energy.
Both the eyelid and eyelashes help protect your eye. What job does the eyelid have that the eyelashes don't?
The eyelid keeps your eyeball moist.
P____es are the smallest parts of a substance. They are too small for us to see.
Particles
Explain why there are water droplets on the bathroom mirror after taking a hot shower. Describe the change in the states of matter that take place.
The hot water (liquid) turns into steam (gas) when taking a hot shower. The steam (gas) then touches the cold mirror, cooling it down. When gas cools, it condenses (condensation) and turns back into liquid.
Explain the difference between a physical and chemical change.
Physical changes are reversible while chemical changes are irreversible.
Give an example of chemical energy turned into movement energy.
Food (chemical energy) gives us energy to run (movement).
You are reading a book with a lamp on next to your bed. How are you able to see the book? Explain.
Light from the light bulb travels in a straight line to the book. The light reflects off the book and enters your eye.