Science- Chemical Changes

Science- Chemical Changes

6th - 8th Grade

8 Qs

quiz-placeholder

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Science- Chemical Changes

Science- Chemical Changes

Assessment

Quiz

Science

6th - 8th Grade

Hard

Created by

Joyce Chan

Used 164+ times

FREE Resource

8 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following substances will react with hydrochloric acid to produce hydrogen gas?

calcium carbonate

sodium hydroxide

zinc oxide

calcium

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which reaction does NOT produce carbon dioxide gas?

Burning of fuel

Thermal decomposition of zinc carbonate

Reaction of calcium hydroxide and hydrochloric acid

Respiration

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is NOT a product formed when sulfuric acid reacts magnesium carbonate?

magnesium sulfate

hydrogen gas

water

carbon dioxide

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The salt calcium nitrate is formed when two colourless solutions are mixed. What are the two possible solutions?

calcium + sodium nitrate

nitric acid + calcium hydroxide

potassium nitrate + hydrochloric acid

nitric acid + calcium sulfate

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A sweet contains citric acid and some chemicals. When the sweet is put into your mouth, it mixes with the water and fizzes, producing a gas. Which of the following can be found in the sweet?

sodium carbonate

ammonium sulfate

sodium oxide

sodium hydroxide

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A conical flask contains sodium hydroxide and methyl orange indicator. Hydrochloric acid is added to the conical flask drop by drop until there is excess acid. What is the expected colour change?

red to orange

yellow to orange

red to yellow

yellow to red

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is NOT an example of neutralisation in our daily lives?

Using a plastic container instead of a metal container to hold vinegar (ethanoic acid)

Washing our hair with conditioner(acidic) to reduce the effects of shampoo(alkaline) on our hair

Using vinegar (acidic) to clean a sting by a wasp (alkaline)

Brushing our teeth with toothpaste(alkaline)

8.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the test for hydrogen gas?

It extinguishes a glowing splint with a pop sound.

It extinguishes a lighted splint with a pop sound.

It gives a white precipitate in limewater.

It produces effervescence in acid.