Year 10 Chemistry (Chapter 1-4)

Atoms contain electrons, neutrons and protons. What is the definition of nucleon number?

• the number of neutrons in the nucleus of an atom

• the number of protons in the nucleus of an atom

• the total number of neutrons and protons in the nucleus of an atom

• the total number of particles in an atom

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NGSS.HS-PS1-8

The diagram shows the atomic structure of an element X. What is X?

• aluminium

• beryllium

• boron

• fluorine

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NGSS.HS-PS1-1

Rescuers are drilling through fallen rock in order to rescue some men trapped in a cave. The drill

needs lubricating from time to time. The following statements were made about the materials used for the drill tip and the lubricant and the reasons for their use.

1 Diamond was used for the drill tip as it does not conduct electricity.

2 Diamond was used for the drill tip as it is very hard.

3 Graphite was used as the lubricant as it conducts electricity.

4 Graphite was used as the lubricant as it is soft and flaky.

Which statements are correct?

• 1 and 3

• 1 and 4

• 2 and 3

• 2 and 4

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NGSS.HS-PS2-6

In which compounds are pairs of electrons shared between atoms?

1 methane

2 lead bromide

3 sodium chloride

• 1 only

• 2 only

• 1 and 3

• 1, 2 and 3

What is the relative formula mass, Mr, of CaCO₃?

• 50

• 68

• 100

• 204

In the outline of the Periodic Table below, some elements are shown as numbers.

Which two numbers are metals in the same period?

• 1 and 2

• 1 and 7

• 3 and 5

• 5 and 6

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NGSS.HS-PS1-1

Diagrams X, Y and Z represent the three states of matter.

Which change occurs during boiling?

• X to Y

• Y to Z

• Z to X

• Z to Y

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NGSS.MS-PS1-4

NGSS.MS-PS3-5

P, Q, R and S are pieces of apparatus? Which row describes the correct apparatus for the measurement made?

• P: the volume of acid added to alkali in a titration

• Q: 1 cm³ of acid to add to calcium carbonate in a rate-determining experiment

• R: 75 cm³ of a gas given off in a rate-determining experiment

• S: 20 cm³ of alkali for use in a titration

Which statement about atoms is correct?

• Atoms contain protons and electrons in the nucleus.

• Neutrons are negatively charged.

• Protons are positively charged.

• The nucleon number is the number of neutrons.

Which diagram correctly shows the ions present in the compound potassium fluoride?

• 
• 
• 
• 

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2