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Chemistry Water

Authored by Lisa Thompson

Science

8th Grade

NGSS covered

Used 1+ times

Chemistry Water
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25 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

When grains of sugar are added to water the sugar molecules become surrounded by the attracted water molecules so that the individual sugar molecules are no longer part of the sugar crystals. This process continues until either all the sugar (________) has dissolved in the water (_________) to form a solution, or there are no longer any unattached water molecules remaining and so no more sugar can dissolve.

solvent, solute

solid, liquid

liquid, solid

solute, solvent

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The acceptable pH level for drinking water is between _________.

1.5 - 3.5

4.0 - 6.0

6.5 - 8.5

9.0 - 11.0

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Water is made from two different elements, these are________.

Magnesium and Oxygen.

Hydrogen and Magnesium.

Oxygen and Hydrogen.

Gold and Silver.

Tags

NGSS.MS-PS1-1

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Water is labelled a 'polar molecule'. Why?

There is ice at the north and south poles.

Water molecules have positively and negatively charged ends.

Water slides down objects.

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A water molecule has the chemical formula H2O. This means that the water molecule is made up of

Two hydrogen atoms and one oxygen atom

Two oxygen atoms and one hydrogen atom

Two hydrogen atoms and two oxygen atoms

Two molecules of water

Tags

NGSS.MS-PS1-1

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

The chemical compound of water is...

HO

H2O

H3O

HO2

Tags

NGSS.MS-PS1-1

7.

MULTIPLE SELECT QUESTION

1 min • 1 pt

The residents of a suburban neighborhood have been experiencing foul-smelling tap water for several weeks. They suspect contamination and are concerned about the safety of their drinking water. What action should the residents take to address the issue with their tap water? Select TWO answers.

Install a cheap water softening system.

Contact the local water utility for testing.

Boil the tap water before consumption.

Use bottled water for all household purposes

Ignore the issue as it might resolve on its own.

Tags

NGSS.HS-LS2-7

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