WorksheetsPhysical Science - Mixtures
Total questions: 21
Worksheet time: 13mins
Name
Class
Date
1.
A compost pile in the backyard for the garden is an example of a:
a)
Heterogeneous Mixture
b)
Homogeneous Mixture
c)
Pure Substance
d)
Compound
2.
What would you use to separate iron filings and sand?
a)
Magnet
b)
Filter paper
c)
Dropper
d)
Funnel
3.
A glass beaker contains 100 milliliters of water into which 5 grams of salt was stirred. Which item should be used to separate this particular mixture?
a)
Triple beam balance
b)
Hot plate
c)
Paper filter
d)
Magnet
4.
Sugar is added to water and stirred until it completely dissolves. Which of the following correctly describes something that has happened to the sugar?
a)
the mass of the sugar increased
b)
the mass of the sugar decreased
c)
the sugar disappeared and no longer exists
d)
the sugar is evenly distributed in the water
5.
A process in which a liquid changes in to vapor or gas by boiling throughout is called
a)
Fractional distillation
b)
Filtration
c)
Distillation
d)
Evaporation
6.
In the picture, different color dots represent different elements. This is an example of a:
a)
Compound
b)
Element
c)
Mixture of elements
d)
Diatomic molecule
7.
Pure substances INCLUDE all of the following EXCEPT for...
a)
Salt
b)
Nitrogen
c)
Sugar
d)
Koolaid
8.
In a sample of salt water, NaCl would be considered the ______.
a)
Solution
b)
Solute
c)
Solvent
d)
Solvation
9.
A solution has two parts. These two parts are called
a)
Solvent & precipitate
b)
Solvent & water
c)
Solvent & solute
d)
Solute & solvation
10.
______ means “will dissolve in”.
a)
Miscible
b)
Immiscible
c)
Soluble
d)
Insoluble
11.
Jessica made a pitcher of lemonade. What can she do to dilute it if she thinks it doesn't taste right?
a)
Add water
b)
Add sugar
c)
Boil the lemonade
d)
Put it in the refrigerator
12.
Water is considered the universal solvent because...
a)
it dissolves most solutes.
b)
the Earth is mostly made of it.
c)
humans are mostly comprised of it.
d)
it's so useful.
13.
Air is an example of a what? Be as specific as you can.
a)
liquid
b)
mixture
c)
solution
d)
pure substance
14.
Which of the following is true about a homogeneous mixture?
a)
It is always dissolved in water
b)
It is a pure substance
c)
It is uniform throughout
d)
You can see the differences in components if you look closely
15.
If you dissolve additional sugar in a glass of lemonade to make it sweeter, the concentration of the lemonade solution would:
a)
Stay the same
b)
Become tastier
c)
Decrease
d)
Increase
16.
True or false: A mixture can be separated by physical means.
a)
True
b)
False
17.
True or false: When sugar dissolves in water, it forms chemical bonds with the water.
a)
True
b)
False
18.
How is a compound different from an element?
a)
An element has only one atom, while a compound has more than one
b)
A compound always has subscripts, while an element does not
c)
A compound has more than one type of atom in each molecule, while an element has the same type of atoms
d)
An element is a pure substance, while a compound is not
19.
In a solution, the solute is
a)
The thing that dissolves
b)
The thing that does the dissolving
20.
In a solution, the solvent is always present in a(n) _______ amount.
a)
Equal
b)
Lesser
c)
Greater
21.
A solid that comes out of a solution is called a
a)
Solute
b)
Precipitate
c)
Solvent
d)
Product
100 %
