Properties of Matter
if something is gritty, smooth, sticky, or rough we are describing a rock's.....
TEXTURE
TRUE OR FALSE.
Cutting an apple is a chemical change.
FALSE.
Changing the form of matter is a physical change.
TRUE OR FALSE.
When an oven is plugged in, it transfers chemical energy to the food it is baking.
FALSE
when an oven is warm, it transfers heat energy to the food it is baking.
What type of energy causes food to cook?
Heat energy
What are conductors?
Conductors allow heat to move more easily.
A glass of water with ice weights 15 grams. how much will it weight after the ice melts?
15 grams
It'll remain the same because the mass of the ice doesn't change. If a solid turns into a liquid the mass stays the same.
TRUE OR FALSE.
Baking a cake is a type of chemical change.
TRUE
cooking or baking is irreversible. This means the change cannot be turned back to its original form. Chemical changes are permanent.
The transfer of heat energy by one thing touching another thing is called
Conduction
Plants use _____ energy to make food
light
sound travels through________
vibrating air
A bottle has a mass of 20 grams. If you add 10 grams of water to the bottle, what would be the new mass?
30 grams.
20g + 10g = 30g
You would add it because you're adding more mass to the bottle.
is ice a solid, liquid, or gas?
a solid.
TRUE OR FALSE.
When sunlight comes in through a window and heats a room, we are using sunlight without realizing it.
TRUE.
We don't purposely let the sun come in through the window, but it helps to keep the room warm.
TRUE OR FALSE
Wood is a conductor of heat.
FALSE
Wood is not a conductor of heat. It doesn't allow heat to pass through; it would just burn.
An object is in motion if it changes
Positions
Magnets are attracted to what metals?
iron, cobalt, nickel
Water freezes at what temperature?
0 C or 32 F
If a musician is playing an instrument, the mechanical energy is going to change into _____ energy
sound energy.
Mechanical energy is kinetic energy. Musicians have to move their instruments to produce the music or sound.
Running water produces
Hydroelectric power
What will roll the farthest?
A ball at the top of a ramp or a ball by the bottom of a ramp?
The ball at the top. The higher an object is placed, the greater its kinetic energy will be.
TRUE OR FALSE.
The south pole of a magnet is attracted to the north pole of a magnet
True, opposites attract
What type of energy causes items to fly in the air?
wind energy
What machine turns moving air into electricity
Turbines