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WorksheetsClassification of Matter
Total questions: 48
Worksheet time: 25mins
The photo shows a heterogeneous mixture. How can you tell it is a heterogeneous mixture from the photo?
You cannot see the different parts that make up the mixture.
You can see the different parts that make up the mixture.
It is being filtered.
The different parts are chemically combined.
What are compounds, molecules, and elements all examples of?
pure substances
homogeneous mixtures
heterogeneous mixtures
What are the two types of mixtures?
pure substances and compounds
homogeneous and molecules
heterogeneous and elements
heterogeneous and homogeneous
Kool-aid powder and sugar are dissolved in water to make a sweet treat. Which type of mixture is this?
homogeneous mixture
heterogeneous mixture
compound
molecule
Which type of matter has a specific composition ("recipe") and cannot be physically separated?
pure substances
homogeneous mixtures
heterogeneous mixtures
colloids
Which type of matter has a variable (able to change) composition ("recipe") and can be physically separated?
pure substances
compounds
molecules
mixtures
Which of the following is an example of a NONREVERSIBLE physical change?
cutting your hair
rust forms on an old car
melting ice
baking cookies
Which of the following is an example of a REVERSIBLE physical change?
crushing a rock
burning paper
freezing water
baking cookies
What is potassium chloride (KCl) an example of?
element
molecule
compound
What is salt water an example of?
homogeneous mixture
compound
molecule
heterogeneous mixture
What physical properties are mixtures classified by?
density and boiling point
particle size and appearance
mass and density
malleability and hardness
A bowl with caramel is put into the microwave. The bowl is checked every 10 seconds for one minute. When does the caramel have the highest viscosity?
after ten seconds have passed
after 20 seconds have passed
after 40 seconds have passed
after 60 seconds have passed
What types of materials tend to be the most malleable?
gases
water
metals
glass
Are you going to study your vocabulary tonight?
Yes, of course! It is my favorite thing to do when I am not in school.
No, I want to fail my test!
Maybe. I am not sure if I want to be successful in life.
Which of the following is the correct way to write the element symbol for helium?
HE
He
he
helium
How do you know a chemical change has occurred when fireworks go off?
light is produced
heat is produced
the color changes (and can't be changed back)
a sound is produced
Water is an element.
True
False - water is compound because it is made of two different elements
False - water is a homogeneous mixture because it is made of two different elements
Mold growing on food.
Chemical change
Physical change
Crumpling a piece of paper.
Physical change
Chemical change
Grilling a hamburger.
Physical change
Chemical change
Burning wood.
Chemical change
Physical change
Chopping wood.
Chemical change
Physical change
Boiling water.
Chemical change
Physical change
Oxygen (O2) and Ozone (O3) are examples of which of the following? (you will choose more than one answer)
compounds
molecules
pure substance
Painting a wall.
Chemical change
Physical change
What is Cobalt (Co) an example of?
element
molecule
compound
mixture
What is copper chloride (CuCl2) an example of?
element
molecule
compound
mixture
What type of change is being shown in the picture?
physical change
chemical change
The photo shows a homogeneous mixture. How can you tell it is a homogeneous mixture from the photo?
You cannot see the different parts that make up the mixture.
You can see the different parts that make up the mixture.
It is being filtered.
The different parts are chemically combined.
Which of the following is a "shortcut" to be able to tell if matter is a pure substance or mixture?
Mixtures always have a symbol or formula written after them.
Example: He, NaCl, H2O, O2
Mixtures are always liquids.
Pure substances always have a symbol or formula written after them.
Example: He, NaCl, H2O, O2
Pure substances are always liquids.
Which of the following is pure substance?
milk
coffee
water
hydrogen (H)
Which of the following is pure substance?
a bowl of cereal
gold (Au)
fruit salad
concrete
Which of the following is a mixture?
Gatorade
copper (Cu)
oxygen (O)
table salt (NaCl)
Which of the following is a mixture?
chicken noodle soup
baking soda (NaHCO3)
water (H2O)
hydroflouric acid (HF)
Which of the following describes a homogeneous mixture?
has larger particles, looks uniform
has larger particles, can visibly see differences
has smaller particles, looks uniform
has smaller particles, can visibly see differences
Which of the following describes a heterogeneous mixture?
has larger particles, looks uniform
has larger particles, can visibly see differences
has smaller particles, looks uniform
has smaller particles, can visibly see differences
Which type of pure substance is only made of ONE atom and is found on the periodic table?
pure substance
compound
mixture
element
Which type of pure substance is only made of TWO OR MORE different types of elements, chemically bonded together?
pure substance
compound
mixture
element
An element symbol is ALWAYS one letter, never more.
True - it is only ONE capital letter.
False - it can be MORE THAN ONE letter.
Compounds can be identified by their formula (combination of letters and numbers).
True - this tells us they contain multiple elements, bonded together
False - we identify them by deciding whether they look uniform or not
Which of the following would be considered matter?
(Remember: it has to have mass and take up space!)
time
sound
gravity
water bottle
In this matter diagram, which word belongs at letter A?
element
pure substance
mixture
compound
In this matter diagram, which word belongs at letter B?
element
pure substance
mixture
compound
In this matter diagram, which word belongs at letter C?
element
pure substance
mixture
compound
In this matter diagram, which word belongs at letter D?
mixture
pure substance
homogeneous
heterogeneous
In this matter diagram, which word belongs at letter E?
mixture
pure substance
homogeneous
heterogeneous
In this matter diagram, which word belongs at letter F?
mixture
pure substance
homogeneous
heterogeneous
What should you do if you have a question while you are studying tonight?
go to bed and don't worry about it
email your teacher or come in before school for help
wait until the test starts to ask
ask a friend who has no idea what you're talking about
