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WorksheetsA "Matter" of Review
Total questions: 25
Worksheet time: 25mins
A bowl of cereal with marshmallows is an example of a ____________?
element
compound
mixture
solution
Which of these objects are NOT examples of solids?
ice cubes
strawberry gelatin
chocolate milkshake
gummy bears
Gasoline burning in a car engine is an example of a physical change.
True
False
To find the density of something, I can ___________________
multiply the length, width, and height
divide the mass by its volume
divide the volume by its mass
multiply the mass with its volume
Which of the following are examples of physical changes?
(Choose the two correct answers.)
Crushing an aluminum can
A bunch of apples rotting
Wood burning in a fire place
Ice in a skating rink melting
What is the unit for measuring volume?
square meters
cubic meters
meters per second
kilograms per liter
Which of the following are characteristic properties of an element?
(Hint: Check the 3 answers that are correct)
shape
density
melting point
boiling point
Elements are substances that can be separated chemically.
True
False
After I boil salty water, only the salt remains. This process is called ________________.
Sanitation
Electrolysis
Distillation
Constipation
___________ is the measure of the amount of matter in an object, and the measure is _____________.
Density; different
Volume; unchanged
Mass; unchanged
Mass; unstable
A chemical bond is the force that holds two (a) together.
Which separation process is an example of electrolysis?
Separating sodium from ocean water
Separating iron with a strainer
Separating gold from sand
Separating copper from ores
A (a) is a mixture that is blended very well and it looks like a single substance.
(Choose: compound / molecule / pure substance / solution)
A (a) is a group of atoms that are held together to act as a single unit.
Which statements are true for a pure substance?
(Choose the two answers that are correct.)
It is made of one element or one compound.
It can be physically separated into their original components or substances.
It can be broken down chemically into elements or compounds.
It can be either homogenous or heterogenous.
What is NOT true about a chemical change?
A new substance is formed
The identity of the substance stays the same
The identity of the substance will change
Iron is an example of a mixture and salt water is an example of a pure substance.
True
False
Which of the following statements describe a compound?
(Choose the answers that are true.)
It's a pure substance
It can be written as a formula
It has different properties from the elements it was created from
It is made of different samples that will have different properties
What did John Dalton conclude about the atoms for an element?
Liquids that are less dense will remain ___________________.
in between more dense liquids
on top of more dense liquids
below more dense liquids
Which of the statements are true for mixtures?
(Choose the answers that are correct.)
It is made up of only one element or compound.
It can be a physical combination of two or more elements or compounds.
It can be separated easily into two or more substances.
It can only be broken down through a chemical change.
If a solid block is floating in water, that means the density is (a) than/as water.
(higher / lower / same)
In a ______________ mixture the substances are uniformly blended together. For a ______________ mixture the substances are combined, but not dissolved well.
(a)
Why shouldn't we rely weight as a constant measurement for the amount of matter in an object?
(Hint: Think about gravity)
We can use electrolysis to separate copper from its ore. Describe this process in four or more steps. (Hint: First step is mining)
