Because liquids will layer in order of density- the less dense liquid floats on the denser liquid if they don't mix, and corn syrup is denser than water
100
What is matter?
Anything that has mass and volume
200
What is mass measured in?
In grams or kilograms
200
What is another way of saying the material that is made up of particles increase in volume?
The particles of the material expands
200
Do all substances have different specific temperatures at which they change state?
Yes
200
Why does ice float on water?
Ice is less dense than water, so it floats
200
What does density mean?
The mass of a given volume
300
What is kinectic energy?
The energy of motion
300
If two substances with different thermal energy come into contact, energy will always flow from...
High to low thermal energy
300
When you add enough energy to a liquid, it will become a_________? And what is that process called?
It will become a gas and the process is called evaporation.
300
Explain why gases and liquids are called fluids, but solids are not.
Liquids and gases do not have a fixed shape, while solids do
300
What is displacement?
The amount of space an object takes up when placed in a fluid
400
What are the tiny particles of matter made of?
Atoms and molecules
400
When you take a temperature reading from a substance, you are...
Sampling the average kinetic energy of its particles
400
What is dry ice?
Solid carbon dioxide
400
Why are fluids able to flow?
Because they do not have a fixed shape
400
What word refers to an increase in volume caused by a decrease in external pressure?
Expansion
500
What are the four main points of the molecular theory?
1. All matter is made up of very small particles
2. There is empty space between them
3. Particles are always moving and are colliding with each other and the walls of their container
4. Energy makes particles move. The more energy the particles have, the faster they move and farther apart
500
What is the origin of the word "kinetic"?
The word "kinetic" comes from a Greek word meaning motion or movement. The same Greek word is the basis of the word "cinema."
500
How does matter change from one state to another?
Matter changes from one state to another by having enough energy that the particles move very far apart or when enough energy is taken away that the particles condense very close together.
500
What is the formula of density?
Density(D) = mass(m)/volume(V)
500
What is the difference between heat and temperature?
Heat is the energy transferred from one material to another as a result of a difference in temperature or a change in state, while temperature is a measure of the average kinetic energy of the particles in a substance