Theory

Particle arrangement in solids, liquids, and gases

1. A list of symbols and formulae is shown: $\text{Br}_2$, $\text{CH}_4$, $\text{C}_2\text{H}_4$, $\text{Cl}^-$, $\text{CO}_2$, $\text{Cr}^{3+}$, $\te...

2023 Spring

Theory

Particle arrangement in solids, liquids, and gases

2. (a) A sample of soil is shaken with distilled water. Draw a diagram to show the filtration apparatus used to separate the soil from the solution ob...

2023 Spring

Theory

Particle arrangement in solids, liquids, and gases

3. This question is about compounds of nitrogen. (a) Complete the dot-and-cross diagram in Fig. 3.1 of a molecule of ammonia. Show outer shell electr...

2023 Spring

Theory

Particle arrangement in solids, liquids, and gases

4. This question is about metals and compounds of metals. (a) Table 4.1 shows some properties of five metals, A, B, C, D and E. [Table_2] State whic...

2023 Spring

Theory

Particle arrangement in solids, liquids, and gases

5. Potassium iodide is an ionic compound. (a) State two properties of an ionic compound. [2] (b) Molten potassium iodide is electrolysed using graphi...

2023 Spring

Theory

Particle arrangement in solids, liquids, and gases

6. (a) Fig. 6.1 shows the displayed formula of a molecule of crotyl alcohol. (i) On Fig. 6.1 draw a circle around the alcohol functional group. [1](ii...

2023 Spring

Theory

Particle arrangement in solids, liquids, and gases

7. This question is about iron. (a) Iron is extracted from iron ore in a blast furnace. (i) Name the main ore of iron. [1] (ii) The main ore of iron...

2023 Spring

Theory

Particle arrangement in solids, liquids, and gases

8. A student investigates the reaction of iron powder with dilute hydrochloric acid at 20 °C. The hydrochloric acid is in excess. (a) Fig. 8.1 shows...

2023 Spring

Theory

Particle arrangement in solids, liquids, and gases

1. Fig. 1.1 shows part of the Periodic Table. Answer the following questions using only the elements in Fig. 1.1. Each symbol of the element may be us...

2023 Summer

Theory

Particle arrangement in solids, liquids, and gases

2. (a) Table 2.1 shows some properties of the halogens. [Table_1]Use the information in Table 2.1 to predict:(i) the melting point of bromine [1](ii) ...

2023 Summer

MCQ

Properties of solids, liquids, and gases

The arrangements of particles in solids, liquids and gases are different. Which statement about the molecules in ice, water or steam is correct?

2023 Spring

MCQ

Properties of solids, liquids, and gases

The melting points and boiling points of three elements, at 1 atm pressure, are shown. [Table_1: Melting and boiling points of argon, nitrogen, and ox...

2023 Spring

MCQ

Properties of solids, liquids, and gases

Which statement describes a compound?

2023 Spring

MCQ

Properties of solids, liquids, and gases

Which statement about elements in the Periodic Table is correct?

2023 Spring

MCQ

Properties of solids, liquids, and gases

Which statement about ions and ionic bonds is correct?

2023 Spring

MCQ

Properties of solids, liquids, and gases

Which molecule has only two shared pairs of electrons?

2023 Spring

MCQ

Properties of solids, liquids, and gases

Which statement about graphite explains why it is used as an electrode?

2023 Spring

MCQ

Properties of solids, liquids, and gases

Methane, CH₄, burns in air to form carbon dioxide and water. What is the balanced equation for this reaction?

2023 Spring

MCQ

Properties of solids, liquids, and gases

Magnesium reacts with steam. $$ \text{Mg} + \text{H}_2\text{O} \rightarrow \text{MgO} + \text{H}_2 $$ When 2.43g of magnesium reacts with an excess ...

2023 Spring

MCQ

Properties of solids, liquids, and gases

The diagram shows an electrolysis circuit. At which electrode is hydrogen formed?

2023 Spring