What is milliliter (mL) or cubic centimeters (cc or cm3)
100
Distance is measured in
What is meters
100
density is measured in
What is grams per cubic centimeter (g/cm3)
200
List the physical properties of matter that we discussed in class. (8 total)
What is mass, volume, size, shape, texture, hardness, phase (solid, liquid, gas), density.
200
matter
What is anything that has mass and volume. All solids, liquids, gases, plasmas are matter
200
volume
What is the amount of space something takes up
200
mass
What is the amount of matter something has
200
Which has a greater density 50g of aluminum or 20g of aluminum?
They are equal. Objects of the same material have the same density regardless of their mass.
300
What is the density of a 10g piece of wood that has a volume of 20 cm3?
0.5 g/cm3
Density=mass divided by volume
300
What is the volume of a block with length of 10 cm, height of 2 cm and width of 2 cm
What is 40 cm3
volume = length times width times height
300
In what type of water will a ship float higher?
Cold saltwater
Cold water is more dense than warm water
Saltwater is more dense than fresh water
300
Why does warm air rise?
It is less dense than cool air
300
How can you tell if an object will sink in water
It will sink if its density is greater than water
400
Object 1 has a density of 18 g/cm3. Object 2 has a density of 10 g/cm3. What can be said about the matter in these objects?
The matter in object 1 is more tightly packed than the matter in object 2
400
What is the density of a block with length of 10 cm, height of 2 cm and width of 2 cm and mass of 80 g
2 g/cm3
Density = mass/volume
mass =80 g
volume = l x w x h = 40 cm3
400
In terms of salt/fresh and warm/cold. What type of water is the most dense? Least Dense?
Most dense: Cold saltwater.
Least dense: Warm Freshwater
400
What is the main advantage of the displacement method of measuring volume
You can measure the volume of ANY object.
400
Give an example of something that is not matter.
Energy (Heat, light, electricity, sound, etc.)
500
What are the 3 common phases of matter and which phases are USUALLY the most dense and least dense?
Solid=most dense. Gas=least dense. Liquid=in between. Water is an exception to this in that ice (solid) is less dense than than liquid water.
500
What did Archimedes discover? How?
He discovered the displacement method for measuring volume in order to find the density of a "gold" crown. He noticed that when an object is placed in water, it displaces an amount of water equal to the volume of the object.
500
Why does warm air rise?
When air is heated the space between the molecules expand (volume increases), because the volume increases its density decreases so it rises.
500
Steel has a greater density than water but a steel ship floats. Why
The shape of the ship includes many air pockets. These air pockets are included when you calculate the density of the ship as a whole. The density of the steel ship AND air pockets is less than the density of the water.
500
You measure 10 cm3 of salt water into a graduated cylinder. The mass of the empty graduated cylinder is 25g. The mass of the saltwater and the graduated cylinder and together is 37g.
What is the density of the salt water?
1.2g/cm3
Density = mass/volume
The mass of the saltwater= mass of the saltwater and the g.c - the mass of the empty g.c (37g-25g=12g)
Density=12g/10mL