Free Printable Pure Substances and Mixtures

Worksheets

Pure Substances and Mixtures

Total questions: 33

Worksheet time: 18mins

Name

Class

Date

Which of these common substances is a homogeneous mixture?

pure water

table salt

whole milk

maple syrup

Which of these substances is an example of a solution?

milk

brass

mercury

concrete

Which is true of all mixtures?

All mixtures are made up of only compounds

All mixtures are made up of one type of element

All mixtures are made up of atoms

All mixtures are made up of colloids

Which of these substances is a compound?

chlorine

nitrogen

uranium

ammonia

Consider a wooden chair and a balloon. What do these two objects always have in common?

Both are made of the same kind of atom

Both are made of atoms

Both have the same mass number

Both are made of the same number of atoms

A magnet was placed near a pile that contained both iron and sulfur. The magnet was moved gradually closer to the pile. As it neared the pile, the magnet started attracting small pieces of iron from the pile. Which of the following statements best describes the contents of the pile?

It is a colloid of sulfur and iron that can separated by magnetism.

It is a compound of iron and sulfur that can be separated by magnetism.

It is a heterogeneous mixture of iron and sulfur that can be separated by magnetism.

It is a solution of iron that can be separated by magnetism.

A heterogeneous mixture in which the particles are unevenly spread throughout the mixture but are not settling out. Examples: milk, mayonnaise, gelatin

colloid

suspension

solution

homogeneous mixture

A homogeneous mixture in which one substance is dissolved in another substance. Example: tea

colloid

suspension

solution

homogeneous mixture

A heterogeneous mixture in which particles of a material are too large to stay mixed with-out being stirred or shaken.

colloid

suspension

solution

homogeneous mixture

10.

A mixture that has a uniform composition. Example: sugar-water

colloid

suspension

solution

homogeneous mixture

11.

A mixture that does not have a uniform composition. Example: Soil

heterogeneous mixture

suspension

solution

homogeneous mixture

12.

An atom is . . .

Made of one or more of the same kind of atom chemically combined

Made up of different kinds of atoms chemically combined

Combination of two or more substances that are physically combined.

The smallest unit of matter

13.

A compound is . . .

Made of one or more of the same kind of atom chemically combined

Made up of different kinds of atoms chemically combined

Combination of two or more substances that are physically combined.

The smallest unit of matter

14.

An element is . . .

Made of one or more of the same kind of atom chemically combined

Made up of different kinds of atoms chemically combined

Combination of two or more substances that are physically combined.

The smallest unit of matter

15.

A mixture is . . .

Made of one or more of the same kind of atom chemically combined

Made up of different kinds of atoms chemically combined

Combination of two or more substances that are physically combined.

The smallest unit of matter

16.

Trail mix is just that - a mix. Or in science terms, it is a mixture. One way you can tell this is a mixture is that you can. .

eat all the parts

measure the amounts of the parts.

separate the parts by their properties.

identify the parts that make up the mixture

17.

A solution is a special mixture where you cannot see the individual substances that are mixed. You look at two bowls of ice cream. One bowl is plain vanilla ice cream and the other is vanilla with chocolate chips. Which statement accurately describes the two bowls of ice cream?

Both are mixtures but only the vanilla is a solution.

Only the chocolate chip ice cream is a mixture.

Neither are mixtures because they are solid.

Both ice creams bowls are solutions.

18.

To determine the density of an object, which set of instruments would be helpful?

triple beam balance and meterstick

graduated cylinder and meterstick

meterstick and an erlenmeyer flask

ruler and graduated cylinder

19.

Which is an example of a solution?

air

oxygen

salt

water

20.

Which is an example of a heterogenous mixture?

gasoline

diet soda

grape juice

flour and water

21.

One difference between mixtures and pure substances is that...

mixtures can be physically separated.

mixtures are made of one type of atom.

pure substances have no chemical bonds

)pure substances can be physically separated.

22.

What does it mean if a mixture is heterogeneous?

you can see the different parts

cannot tell one part from another

very well blended

made of elements

23.

What does it mean if a mixture is homogeneous?

you can see the different parts

cannot tell one part from another

chunks of particles

made of elements

24.

What type of mixture is this?

heterogeneous

homogeneous

25.

What type of mixture is this?

heterogeneous

homogeneous

26.

To separate the sugar and lemonade what method should you use?

filtration

sorting

magnet

boiling

27.

To separate trail mix what method should you use?

filtration

sorting

magnet

boiling

28.

Elements and compounds are always ___.

pure

mixed

29.

air is a

compound

element

heterogeneous mixture

solution

30.

salt water is a

compound

element

heterogeneous mixture

solution

31.

Another name for a homogeneous mixture is

an element.

a solution.

a compound.

32.

This type of mixture contains two or more substances that are visibly distinguishable.

homogeneous

heterogeneous

solution

colloid

33.

The image shown is an example of a ___________.

solution

mixture

gas

plasma

100 %

Pure Substances and Mixtures

Total questions: 33

Worksheet time: 18mins

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