WorksheetsCU7: Density
Total questions: 32
Worksheet time: 22mins
The density of a material is determined by....
mass and volume
mass and area
weight and volume
weight and area
density = volume / mass
density = weight/volume
A balloon filled with Helium floats in Earth's atmosphere because...
helium is less dense than air.
helium is more dense than air.
helium has the same density as air.
True or False: The density of a specific type of material changes if the size of the material increases or decreases.
Why does ice float in your tasty beverage?
Solid water is more dense than liquid water.
A crayon has a mass of 10 g and volume of 5 mL. What is the crayon's density?
50 g/mL
0.5 g/mL
Which liquid is the most dense?
The amount of space something takes up is its...
weight
Density is...
is the ratio between mass and volume
the amount of matter in an object
the amount of space an object takes up
the weight of an object
An irregularly shaped rock was lowered into a graduated cylinder holding a volume of water equal to 50 mL. The volume of liquid in the graduated cylinder rose to 75 mL. If the mass of the rock is 250 g, what is the rock's density?
0.1 g/mL
3.3 g/mL
10 g/mL
0.3 g/mL
The mass will be greater on the moon.
The mass will be less on the moon.
The mass will stay the same.
In a dense material, the atoms...
are packed close together.
have lots of room between them.
have the same space between them as any other material, regardless of density.
Archimedes was able to use the densities of silver and gold to discover if the emperor's crown was made of pure gold because...
substances have their own unique densities.
substances can change densities depending on their size.
substances can change densities depending on their surface areas.
A brick sinks in water while a wooden block of the same size floats. This is because the brick has...
a lower volume than the wooden block.
a lower density than the wooden block.
a higher volume than the wooden block.
a higher density than the wooden block.
Which box has a higher density?
A
B
They are the same
You are given a mystery object in science class. Your teacher asks you to determine if your object is more or less dense than water. You place the object in the water and it sinks. What statement would best describe this situation?
The mystery substance is denser than water.
Water is denser than the mystery substance.
They both have the same mass.
You don't have enough information to determine.
The nucleus of an atom makes up _____ of its mass.
Almost none
50%
90%
99.9%
Which subatomic particle has almost no mass?
Protons
Neutrons
Electrons
Most of the atom is empty space.
True.
False.
If the grapefruit's atoms were each the size of a blueberry, then the grapefruit would be the size of...
the Earth.
a house.
a city.
the solar system.
If you filled the Earth with blueberries, that same number would represent the atoms in...
a grapefruit.
the sun.
a basketball.
a house.
Drawings of the atom in science textbooks are wrong because...
they show the nucleus at the center.
they're not drawn to scale.
the nucleus is drawn too small.
the electrons are on the outside.
If an atom was the size of a football stadium, the nucleus would be...
too small to see.
barely visible.
the size of a marble.
the size of a house.
The protons and neutrons are inside of the nucleus, and contain almost all of...
the charge of the atom.
the volume of the atom.
the mass of the atom.
To have the same density as the nucleus of an atom, how many cars must be crammed into a 1ft x 1ft x 1ft box?
1 billion cars
1000 cars
about 2 million cars
Is it possible to see atoms with your eyes?
Yes
No, they're far too small.
When we use our most powerful microscopes, we...
can see the inside of atoms.
can visually count the protons, neutrons, and electrons.
can only see the outside shape.
Almost all the mass of an atom is in it's...
nucleus.
electron cloud.
protons.
electrons.
Which is a true statement?
Protons & neutrons have the same mass.
Electrons have more mass than protons but less than neutrons.
Electrons have the same mass as protons but less than neutrons.
Protons, neutrons, and electrons all have the same mass.
Which is a true statement?
The electron cloud has more volume than the nucleus.
The nucleus has more volume than the electron cloud.
The electron cloud and the nucleus have the same volume.
Which is a true statement?
Compared to the nucleus, the electron cloud has a very high density.
Compared to the nucleus, the electron cloud has a very low density.
Compared to the electron cloud, the nucleus has a very low density.
The densities of the electron cloud and the nucleus are the same.
Which is a true statement?
The electron cloud has lots of mass and lots of volume compared to the nucleus.
The electron cloud has a very small amount of mass and a small amount of volume compared to the nucleus.
The electron cloud has very little mass and lots of volume compared to the nucleus.
The electron cloud has lots of mass and a small volume compared to the nucleus.
