N5 Chemistry MC 2018

N5 Chemistry MC 2018

9th - 12th Grade

25 Qs

quiz-placeholder

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N5 Chemistry MC 2018

N5 Chemistry MC 2018

Assessment

Quiz

Chemistry

9th - 12th Grade

Medium

Created by

Donna Kirk

Used 5+ times

FREE Resource

25 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Which of the following changes would not speed up a chemical reaction?

Increasing the particle size

Increasing the temperature

Increasing the concentration

Addition of a catalyst

Answer explanation

Increasing the particle size decreases the surface area, and will therefore slow down a chemical reaction.

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

Which line in the table identifies the correct location of a proton and an electron in an atom?

A

B

C

D

Answer explanation

Media Image

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Which of the following elements does not exist as diatomic molecules?

Oxygen

Helium

Bromine

Hydrogen

Answer explanation

Helium is a (monatomic) noble gas

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

The shapes of some molecules are shown below. The shape of a molecule of hydrogen bromide is likely to be

tetrahedral

trigonal pyramidal

angular

linear

Answer explanation

Hydrogen bromide has the formula HBr using the cross-over rule.

The correct structure for this can only be linear.

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Which of the following elements forms an ion with a single positive charge and an electron arrangement of 2,8?

You may wish to use the data booklet to help you.

Sodium

Magnesium

Fluorine

Neon

Answer explanation

A Na atoms have electron arrangement 2,8,1 - Na+ ions have arrangement 2,8

B Mg atoms have electron arrangement 2,8,2 - Mg+ ions have arrangement 2,8,1

C F atoms have electron arrangement 2,7 - F+ ions have arrangement 2,6

D Ne atoms have electron arrangement 2,8 - Na+ ions have arrangement 2,7

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

Which line in the table shows the properties of a covalent network compound?

A

B

C

D

Answer explanation

Media Image

A Bonding type is covalent molecular as it does not conduct and has low mpt/bpt

B Bonding type is ionic as is does not conduct as solid but does conduct as liquid

C Bonding type is metallic as it conducts both as a solid and a liquid

D Bonding type is covalent network as it does no conduct and has very high mpt

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

0·1 mol of sodium hydroxide was dissolved in water and the solution made up to 250 cm3.

What is the concentration, in mol l-1, of the sodium hydroxide solution?

0·0004

0·025

0·4

2·5

Answer explanation

Media Image

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