A
The instrument used to measure temperature.
Thermometer
The freezing point of water in Celsius.
0 Degrees Celsius
The boiling point of water in Celsius.
100 Degrees Celsius
Room temperature in Celsius.
20 Degrees Celsius
If you leave a cup of hot water and a cup of ice water in the room for 24 hours, what will happen to their temperatures?
They will become the same temperature: 20 Degrees Celsius
This type of change may cause the substance to look different, but the chemical formula does NOT change. For example, folding a piece of paper.
Physical change
This type of change causes new substances to be formed and the chemical formula changes. For example, burning a marshmallow.
Chemical change
Everything in the universe that has mass and takes up space is called what?
Matter
The amount of matter in something is called what? We often call it weight.
Mass
The amount of space an object takes up is called what?
Volume
What are the three states of matter?
Which two states of matter are fluid?
Liquid and gas
Molecules move the fastest in which state of matter?
Gas
Molecules move the slowest in which state of matter?
Solid
When you add heat to a substance, it causes the molecules to move or vibrate ____________.
Faster or slower?
Faster
When you take away heat from a substance, it causes the molecules to move or vibrate _________.
Faster or slower?
Slower
Changing a solid to a liquid is called what?
Changing a liquid to a solid is called what?
Freezing
Changing a liquid to a gas is called what?
Condensation
What are the three things that will make water evaporate more quickly?