1.
State what is meant by atomic structure. [1]
JD SCIENCE
Core chemistry — reactions, rates and calculations
Answer all questions. Show working. Answers are in a separate file on the Worksheets page — do not look at them until you have finished.
2.
State what is meant by bonding. [1]
3.
State what is meant by a mole. [1]
4.
State what is meant by a balanced equation. [1]
5.
State what is meant by concentration. [1]
6.
State what is meant by an acid–base reaction. [1]
7.
State what is meant by rate of reaction. [1]
8.
State what is meant by an equilibrium. [1]
9.
State what is meant by organic chemistry. [1]
10.
State what is meant by chemical analysis. [1]
11.
Pat is asked about atomic structure in a Pearson Science paper.
(a) Describe atomic structure. [2]
(b) Explain why atomic structure is important in this topic. [3]
12.
Pat is asked about bonding in a Pearson Science paper.
(a) Describe bonding. [2]
(b) Explain why bonding is important in this topic. [3]
13.
Pat is asked about a mole in a Pearson Science paper.
(a) Describe a mole. [2]
(b) Explain why a mole is important in this topic. [3]
14.
Pat is asked about a balanced equation in a Pearson Science paper.
(a) Describe a balanced equation. [2]
(b) Explain why a balanced equation is important in this topic. [3]
15.
Pat is asked about concentration in a Pearson Science paper.
(a) Describe concentration. [2]
(b) Explain why concentration is important in this topic. [3]
16.
Pat is asked about an acid–base reaction in a Pearson Science paper.
(a) Describe an acid–base reaction. [2]
(b) Explain why an acid–base reaction is important in this topic. [3]
17.
n in 8.0 g NaOH (M=40) [3]
18.
c if 0.025 mol in 250 cm³ [3]
19.
Titre 24.80 cm³ of 0.100 mol dm⁻³. Moles? [3]
20.
Mr of CaCO₃ (Ca40, C12, O16) [3]
21.
Percentage yield 7.2 g from 9.0 g [3]
22.
Rate: 40 cm³ gas in 50 s [3]
23.
Pat carries out a T-Level occupational task on T-Level core chemistry. This is a typical Pearson required-practical style question.
(a) Identify the independent variable and the dependent variable. [2]
(b) State one control variable and explain why it must be controlled. [2]
(c) Suggest one improvement or source of error and how it affects the result. [2]
24.
Pat carries out writing or following an SOP for T-Level core chemistry. This is a typical Pearson required-practical style question.
(a) Identify the independent variable and the dependent variable. [2]
(b) State one control variable and explain why it must be controlled. [2]
(c) Suggest one improvement or source of error and how it affects the result. [2]
25.
Pat carries out a COSHH / risk-assessment review for T-Level core chemistry. This is a typical Pearson required-practical style question.
(a) Identify the independent variable and the dependent variable. [2]
(b) State one control variable and explain why it must be controlled. [2]
(c) Suggest one improvement or source of error and how it affects the result. [2]
26.
Pat carries out data review in a LIMS or quality log for T-Level core chemistry. This is a typical Pearson required-practical style question.
(a) Identify the independent variable and the dependent variable. [2]
(b) State one control variable and explain why it must be controlled. [2]
(c) Suggest one improvement or source of error and how it affects the result. [2]
27.
Compare atomic structure with a balanced equation. [4]
28.
Compare bonding with concentration. [4]
29.
Compare a mole with an acid–base reaction. [4]
30.
Compare a balanced equation with rate of reaction. [4]
31.
Apply your knowledge of rate of reaction to this situation: collision theory [3]
32.
Apply your knowledge of an equilibrium to this situation: Le Chatelier [3]