Atoms, elements and compounds | Starter Quiz | Oak National Academy

Atoms, elements and compounds | Starter Quiz | Oak National Academy

9th Grade

6 Qs

quiz-placeholder

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Atoms, elements and compounds | Starter Quiz | Oak National Academy

Atoms, elements and compounds | Starter Quiz | Oak National Academy

Assessment

Quiz

Chemistry

9th Grade

Hard

Created by

Oak National Academy

FREE Resource

6 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is matter?

anything that takes up space and has mass

only liquids and solids

only gases

energy

Answer explanation

Matter is anything that takes up space and has mass, including solids, liquids, gases.

2.

MATCH QUESTION

1 min • 1 pt

Match the following elements with their correct atomic number (found on the periodic table).

Neon

11

Chlorine

26

Iron

17

Sodium

10

Answer explanation

Neon - 10 Iron - 26 Chlorine - 17 Sodium - 11

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Melting ice is an example of ...

a chemical change.

a physical change.

both a physical and chemical change.

neither a physical nor chemical change.

Answer explanation

Melting ice is a physical change because it involves a change in state (from solid to liquid) without altering the chemical composition of water.

4.

MATCH QUESTION

1 min • 1 pt

Match the subatomic particles with their correct charge.

Electron

Positive

Neutron

Negative

Proton

Neutral

Answer explanation

Protons are positively charged, neutrons have no charge and are neutral, and electrons are negatively charged.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Where is the majority of an atom's mass located?

in the electrons

in the nucleus

evenly distributed throughout the atom

Answer explanation

The majority of an atom's mass is located in the nucleus, which contains protons and neutrons. Electrons contribute very little to the atom's overall mass.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The term "nucleus" is used in multiple subjects but refers to different things. What does the nucleus refer to in chemistry?

the centre of an atom, containing protons and neutrons

the part of a cell that contains genetic material

a cluster of neuronal cell bodies within the brain

a dense cluster of stars or galaxies, especially at the centre of a galaxy

Answer explanation

In chemistry, the nucleus refers to the centre of an atom, containing protons and neutrons. This is different from its use in other disciplines. All shown definitions are real definitions, but only one of them is relevant to us in chemistry.