Matter And Its Phases
Changes of State In Matter
Miscellaneous
Density
Measuring Density
100
Anything that has mass and volume
What is matter?
100
When solids turn into liquid
What is melting?
100
Why does ice float in water?
It is less dense than the water
100
This is how much "stuff" or matter something has.
What is mass?
100
D = m÷v
What is the formula for finding density?
200
State of matter with definite shape and volume.
What is a solid?
200
The temperature where solids start to melt.
What is the melting point?
200
In this phase of matter, the forces holding the particles together are the strongest
What is solid?
200
This is how much space something takes up.
What is volume?
200
A mystery object has a mass of 30g. The volume is 3 cm3. What is it's density?
10g/cm3
300
Matter where the particles are slightly spaced apart, and can slide past each other freely.
What is liquid?
300
When a gas turns into a liquid
What is condensation?
300
This is the freezing/melting point of water
What is 0°C?
300
This layer is the most dense.
What is 2?
300
An object has a volume of 75cm3. It's mass is 10g. What is the density of the object?
0.13g/cm3
400
Matter where particles are moving very fast and are far apart from one another
What is gas?
400
When a liquid turns into a solid
What is freezing?
400
When a liquid turns into a gas
What is boiling?
400
This is the density of water.
What is 1.0g/mL
400
An object has a density of 2.5g/cm3. Will this float in water?
No, because it's density is greater than water's density which is 1.0g/mL
500
The particles in this state of matter are not moving freely, but simply vibrating in place.
What is a solid?
500
This is what you call the temperature at which a liquid will turn into a gas.
Boiling point
500
This is what happens to the temperature of a substance during a phase change.
What is stays the same?
500
I have a random object and I want to see if it will float in water or not. Before throwing it in, how could I determine whether it will float?
Find the mass and volume. With those, you can calculate density and compare the objects density with the density of water. If the object is less dense, it will float and if it is more dense, it will sink.
500
An object has a mass of 45g and a volume of 50cm3. Will this object float in water?
Yes, because it's density is 0.9g/cm3 which is less than water's density which is 1.0g/mL