WorksheetsElements, Compounds, and Mixtures
Total questions: 50
Worksheet time: 2hrs 40mins
Which of the following is the best description of an element?
A substance that cannot be broken down into simpler substances
A naturally occurring mineral made of more than one substances
A small particle made with a specific chemical composition
A collection of atoms that have different abilities when joined together
Provided is a list of five different substances. How many of these substances are elements?
2
3
4
5
__ is a pure substance containing two or more kinds of atoms.
Element
compound
mixture
solution
Which of the following is a heterogenous mixture?
neon
soil
steel
salt water
Which of the following is a homogeneous mixture?
sand in a bottle
lemonade
Mercury
salad
Table Salt (NaCl)
element
compound
mixture
Copper (Cu)
element
compound
mixture
The beaker contains water and rubber pellets. Which method can be used to separate the mixture?
magnetism
filtration
floatation
The beaker contains water and salt Which method can be used to separate the mixture?
evaporation
filtration
floatation
sifting
Sugar and sand were added to water, then stirred. The mixture was then poured through the filter paper. Which statement correctly tells what happened?
the sugar and the sand both stayed on the filter paper and the water went through the filter into the beaker
the sand stayed on the filter paper and the sugar and water went through the filter into the beaker
the water, sand, and sugar all went through the filter paper and into the beaker
the water, sand, and sugar all stayed on the filter paper, and nothing went into the beaker
Which bowl can be separated by using magnetism?
Bowl 1
none of them
Bowls 2 and 3
Bowl 4
Which bowl can be separated by using filtration?
Bowl 1
Bowl 2
Bowl 3
Bowl 4
A teacher made a sugar water mixture in a glass container using tap water and sugar. What should the teacher do to separate the sugar from the water after the sugar is dissolved into the water?
The teacher should freeze the mixture to separate the sugar and water.
The teacher should boil the mixture until the water evaporates and leaves the sugar in the glass.
The teacher should pour the mixture through a filter to trap the sugar as the water passes through.
The teacher should use a magnet to attract the sugar to the bottom of the glass.
A solution of salt and water was put over heat. What will happen next?
The salt will evaporate
the salt and water evaporate
the water will evaporate
This technique is based on the differences of the boiling point of the substance in the mixture.
decantation
distillation
filtration
chromatography
Decantation is used to separate...
a heavy insoluble solid from a liquid.
a light insoluble solid from a suspension.
a soluble solid from a solution
puppies from kittens
This involves using a strainer or a big screen to separate the components of solid mixtures.
chromatography
distillation
sieving
physical manipulation
This method is used to separate metals from non metals.
use of magnet
physical manipulation
sieving
chromatography
What process of separating mixture is illustrated on the animated gif posted here?
decantation
distillation
evaporation
condensation
Dry ice is solid. When it is left under room temperature it gives off gas. What process is this?
evaporation
distillation
decantation
sublimation
Which of these is a physical quantity of matter?
density
reactivity
corrosiveness
flammability
Which of these is a chemical properties of matter?
color
boiling point
melting point
corrosiveness
What kind of changes in matter is shown here?
chemical change
physical change
phase change
none of these
What is the method can be used for separate of an insoluble solid from a liquid by pouring away the liquid and leaving behind the solid ?
decanting
evaporation
sieving
desalination
Ink can be separated by a method of -----------------------------------------------
distillation
filtration
chromatography
sedimentation
What is the correct image of paper chromatography???
[check all that apply] Pure substances include:
Elements
Homogeneous Mixtures
Compounds
Heterogeneous Mixtures
What is this?
element
compound
mixture
What is this?
element
compound
mixture
What is this?
element
compound
mixture
What is this?
element
compound
mixture
What is this?
methane (CH4)
element
compound
mixture
What is this?
honey
element
compound
mixture
Mixture or Pure Substance?
Mixture
Pure Substance
Mixture or Pure Substance?
Mixture
Pure Substance
Mixture or Pure Substance?
Mixture
Pure Substance
Mixture or Pure Substance?
Mixture
Pure Substance
Mixture or Pure Substance?
Mixture
Pure Substance
Mixture or Pure Substance?
Mixture
Pure Substance
Mixture or Pure Substance?
Mixture
Pure Substance
Mixture or Pure Substance?
Mixture
Pure Substance
Mixture or Pure Substance?
Mixture
Pure Substance
Mixture or Pure Substance?
Mixture
Pure Substance
Mixture or Pure Substance?
Mixture
Pure Substance
Mixture or Pure Substance?
Mixture
Pure Substance
Which picture(s) represents a mixture between an element and a compound?
A
B
D
B and D
The particle diagram shown is a:
pure substance
mixture
The particle diagram shown is a:
pure substance
mixture
