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Ambridge Checkpoint Lower Secondary Science Grade 7 — Ch 15 Forces, Ch 3 Respiratory System, Ch 11 Reactivity of Metals
63 topics across 4 chapters
Chapter 1
Cross-cutting science skills (used in all 3 chapters)
1
Lab safety basics: goggles, heat, glassware, chemicals, and clean-up
2
Fair tests: independent/dependent variables and control variables
3
Using models/diagrams to explain processes (clear labels + cause/effect)
4
Data handling: variables, tables, graphs, and conclusions
3 subtopics
5
Identify variables in an investigation and write a clear method
6
Draw appropriate graphs (axes, scale, labels) and choose graph type
7
Calculate averages and decide what to do with anomalies (outliers)
8
Checkpoint revision routine: self-quizzing, past questions, and fixing errors
Chapter 2
Chapter 3: The Respiratory System
9
Respiratory system structure (organs and the air pathway)
3 subtopics
10
Trace the air pathway and label a respiratory diagram from memory
11
Diaphragm, ribs, and intercostal muscles: what they do
12
Alveoli adaptations: large surface area, thin walls, good blood supply
13
Breathing mechanics and gas exchange
3 subtopics
14
Inhalation/exhalation: pressure and volume changes (qualitative)
15
Diffusion in gas exchange (concentration gradient idea)
16
Link to circulation: how oxygen and carbon dioxide are transported
17
Breathing vs respiration (energy release from food)
2 subtopics
18
Aerobic respiration (word equation) and why it releases useful energy
19
When oxygen is limited: anaerobic respiration idea (school-level)
20
Respiratory health: exercise, asthma, smoking/pollution impacts
2 subtopics
21
How exercise affects breathing rate and why (link to oxygen demand)
22
Common issues: asthma triggers and how smoking damages gas exchange surfaces
23
Practical: measuring breathing rate (and planning a fair test)
2 subtopics
24
Plan an investigation: breathing rate before/after exercise (controls + repeat readings)
↗ Fair tests: independent/dependent variables and control variables (see Chapter 1)
Chapter 3
Chapter 11: The Reactivity of Metals
25
Metal properties, corrosion, and rusting (intro)
3 subtopics
26
Compare metals vs non-metals (simple property table)
27
Rusting conditions: water + oxygen (and salt speeding it up)
28
Preventing rust: painting, oiling, galvanizing, sacrificial protection (intro)
29
The reactivity series and displacement reactions
3 subtopics
30
What “more reactive” means: patterns in observations (bubbles, heat, speed)
31
Displacement reactions: predicting if a reaction will happen
32
Writing word equations for metal reactions (no balancing required)
33
Reactions of metals with oxygen, water, and acids
3 subtopics
34
Metal + oxygen → metal oxide (evidence and naming)
35
Metal + acid → salt + hydrogen (evidence and naming)
36
Hydrogen test (squeaky pop) and handling acids safely
37
Extraction and uses of metals (basic ideas)
2 subtopics
38
Why some metals are found unreacted but others are in ores (reactivity link)
39
Simple extraction ideas: heating with carbon vs electrolysis (concept only)
40
Practical: displacement and acid-reaction tests (observations + safety)
3 subtopics
41
Record observations correctly (color change, fizzing, temperature, precipitate)
↗ Hydrogen test (squeaky pop) and handling acids safely (see Chapter 3)
↗ Data handling: variables, tables, graphs, and conclusions (see Chapter 1)
Chapter 4
Chapter 15: Forces
42
Force basics (what a force is, directions, and effects)
3 subtopics
43
Contact vs non-contact forces: examples and how to identify them
44
Mass vs weight and gravity (including units)
45
Drawing simple force diagrams (arrows, labels, direction)
46
Balanced vs unbalanced forces and motion (qualitative)
3 subtopics
47
Recognize balanced forces (no change in motion) vs unbalanced (speed/direction changes)
48
Real-life situations: falling, sliding, pushing—identify forces acting
↗ Drawing simple force diagrams (arrows, labels, direction) (see Chapter 4)
49
Friction and air resistance (drag)
2 subtopics
50
Explain how friction can be helpful or unwanted (everyday examples)
51
Explain why drag increases with speed and surface area (qualitative)
52
Measuring forces and analyzing force data
4 subtopics
53
Using a spring balance/newton meter correctly and reading scales
54
Stretching springs and simple Hooke’s law idea (force–extension)
55
Interpreting force–extension graphs (shape, gradient, anomalies)
↗ Data handling: variables, tables, graphs, and conclusions (see Chapter 1)
56
Moments, turning effects, and stability (intro)
2 subtopics
57
Turning effect: clockwise vs anticlockwise, and everyday examples
58
Stability: center of mass idea, base of support, and toppling

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