Free Printable Elements-C-Mixtures

Worksheets

Elements-C-Mixtures

Total questions: 25

Worksheet time: 50mins

Name

Class

Date

Contains only one kind of atom.

Element

Compund

Mixture

Stainless steel is a _________.

element

homogenous mixture

compound

heterogenous mixture

Glucose(C₆H₁₂O₆₁)an an example of -------------

Element

Compound

homogenous mixture

heterogenous mixture

A pure substance...

is an element or a compound

is an element or a mixture

is a compound or a mixture

is a mixture

Humans absorb oxygen from the air they breathe in and exhale carbon dioxide gas, CO2. Carbon dioxide gas is

an element made of carbon and oxygen atoms.

a solution made of carbon and oxygen atoms.

a compound of carbon and oxygen atoms.

a mixture of carbon and oxygen atoms.

Brass is a metal that is bright red and gold. It is formed by combining, not chemically, two elements, zinc and copper. Based on the information, how would brass be classified?

an element

compound

solid- solid solution (homogenous mixture)

heterogenous mixture

A student placed a small chip of limestone into a hydrochloric acid solution, and carbon dioxide gas was released. The carbon dioxide provided evidence that

only a physical change occurred.

a chemical change occurred.

only a loss of mass occurred.

the formation of an element occurred.

Which is not a separation technique?

Filtrating

Distillating

Evaporating

Dissolving

Solutions are made up of...?

Solutes and insolubles

Solubles and solutes

Solutes and solvents

Solubles and solvents

10.

In a solution of saltwater, what is the solute?

Water

Saltwater

Salt

There is no solute, it is insoluble

11.

Dyes in water soluble markers may be separated by means of

Simple distillation

Crystallisation

Chromatography

Filtration

12.

Which separation technique uses the apparatus shown in the diagram?

filtration

evaporation

distillation

chromatography

13.

Water and alcohol are easily separated by distillation because of their

different densities

different boiling points

different colours

different melting points

14.

You are eating a pizza. What type of mixture are you consuming?

homogeneous

heterogeneous

pure substance

The Periodic Table

15.

If a spoonful of sugar is mixed in a glass of water, what is the water called?

solute

solution

solvent

element

16.

Which separation technique is used to obtain pure water from seawater?

Simple distillation

Filtration

Chromatography

Evaporation

17.

Pepsi is a . . .

Heterogeneous mixture

homogeneous mixture

Element

Compound

18.

What would you use to separate iron shaving and sand?

Magnet

Filter paper

Dropper

Funnel

19.

A mixture that appears to be evenly mixed throughout:

an atom

a compound

a homogeneous mixture

a heterogeneous mixture

20.

Mixtures are separated through ___________changes.

mixture

compound

physical

21.

Examples are diamonds (C) and Uranium (U)

elements

mixtures

compounds

22.

Which one of the following is NOT an example of a separation technique?

boiling an egg

fishing net

surgical mask

tea strainer

23.

A solution that contains a large amount of solute is best described as

unsaturated

concentrated

dilute

weak

24.

What method is used to obtain copper(II) sulfate crystals from its solution?

Crystallisation

Evaporation to dryness

Paper chromatography

Fractional distillation

25.

Which of the following statements tells us that a sample of liquid is pure water?

It is colourless.

It leaves no residue when filtered.

It boils at 100^oC.

It is odourless.

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Elements-C-Mixtures

Total questions: 25

Worksheet time: 50mins

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