Year 7 Science – Solutions and Mixtures 1
Practise the states of matter, dissolving, and separating everyday mixtures. 20 questions. 25 minutes.
Rain, hail and snow fall from clouds. Which stage of the water cycle is this?
A puddle on a sunny footpath slowly dries up. Which process moves the water into the air?
Which statement describes the particles in a solid?
A student heats a beaker of ice and records the temperature. What is happening between 2 and 6 minutes?
| Time (min) | Temperature (°C) |
|---|---|
| 0 | -5 |
| 2 | 0 |
| 4 | 0 |
| 6 | 0 |
| 8 | 4 |
| 10 | 12 |
Why does a block of ice float in a glass of liquid water?
Coffee powder dissolves in hot milk to make a drink. Which word describes the coffee powder?
A student stirs sugar into water until it vanishes. What is the mass of the sugar water?
Which of these is a mixture?
A mixture contains iron filings and sand. Which method separates them?
A student wants to get the salt back from a glass of salty water. Which method works?
Cycad nuts contain toxins. How did Aboriginal peoples make them safe to eat?
Choose the word that completes the blank.
Water vapour in the air cools and turns into tiny droplets in clouds by 1.
Blank 1: condensation · evaporation · freezing
Choose the words that complete each blank.
In a gas, the particles are 1 apart and move 2.
Blank 1: close · far · touching
Blank 2: slowly in a pattern · by vibrating in place · rapidly and randomly
Choose the word that completes the blank.
A water strider can walk on a pond because of the water's 1.
Blank 1: buoyancy · surface tension · density
Choose the word that completes the blank.
Sand does not dissolve in water. Sand is described as 1.
Blank 1: soluble · a solvent · insoluble · a solution
Choose the word that completes each blank.
Oxygen gas (O₂) is an 1. Salt (NaCl) is a 2.
Blank 1: compound · mixture · element
Blank 2: compound · mixture · element
Choose the word that completes each blank.
When muddy water is filtered, the liquid that passes through is the 1 and the solid left on the paper is the 2.
Blank 1: residue · filtrate · distillate
Blank 2: residue · filtrate · solute
Circle 1 word in the sentence below.
Coffee powder dissolves in hot milk. Click the solvent.
Coffeepowderdissolvesinhotmilk
Circle 2 words in the sentence below.
Click the two elements in this list.
oxygenwaterironsaltair
Circle 2 words in the sentence below.
Click the two mixtures that a magnet could separate.
nails-and-sandsugar-and-teasteel-pins-and-ricechalk-and-water