Sample Test: Physical Science

Physical Science: sample test

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1 Question 1 of 10

Complete the sentence: a neutron has a relative charge of ______.

A 0 B +1 C −1 D +2

2 Question 2 of 10

Complete the sentence: argon is used to provide an ______ atmosphere that prevents unwanted reactions.

A acidic B oxidising C alkaline D inert

3 Question 3 of 10

What are the particles in a metal lattice?

A Negative ions in a gas of electrons B Neutral atoms in a pool of protons C Molecules in a large sea of ions D Positive ions in a sea of free electrons

4 Question 4 of 10

What holds a metallic lattice together?

A Attraction between positive ions and electrons B Attraction between negative ions and the protons C Shared pairs of electrons between pairs of atoms D Weak forces between small separate molecules

5 Question 5 of 10

The temperature of a reaction mixture falls from 22 °C to 14 °C. Which statement is correct?

A The reaction is exothermic and gives out energy B The reaction is endothermic and takes in energy C The reaction is exothermic and takes in energy D The reaction is endothermic and gives out energy

6 Question 6 of 10

In a dot and cross diagram, what do the dots and crosses represent?

A Protons from two different atoms B Electrons from two different atoms C Neutrons from two different atoms D Ions from two different atoms

7 Question 7 of 10

Sodium has proton number 11. What is the electron arrangement of a sodium atom?

A 2,8,2 B 2,8,1 C 2,8,8 D 2,1

8 Question 8 of 10

What is the value of the Avogadro constant?

A 6.02 × 10²³ per mole B 6.02 × 10³² per mole C 6.20 × 10²³ per mole D 2.40 × 10²³ per mole

9 Question 9 of 10

Which axis normally shows time on a speed-of-reaction graph?

A The y-axis, the vertical axis B The x-axis, the horizontal axis C Neither axis, as time is not plotted D Both axes, as time is plotted twice

10 Question 10 of 10

Which method separates an insoluble solid from a liquid?

A Evaporating the liquid until it boils dry B Filtering the mixture through filter paper C Shaking the mixture inside a separating funnel D Heating the mixture so that the solid sublimes

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