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Foundation Chemistry Quiz
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Foundation Chemistry Quiz
Help a community garden team investigate everyday materials and reactions. Answer all 10 questions. Show working where needed. Total: 17 marks.
Materials and Particles
Use your knowledge of atoms, elements and states of matter to solve the garden team's challenges.
1.Which property tells the team whether a substance can catch fire? (1 mark)
- Density
- Flammability
- Melting point
- Colour
2.The team reads the symbol Na on a fertiliser label. Which element does Na represent? (1 mark)
3.A neutral carbon atom has atomic number 6. How many electrons does it have? (1 mark)
- 4
- 6
- 8
- 12
4.In a puddle, water particles are close together but can move past one another. What state of matter is the water in? (1 mark)
Explain and Apply
A chilly morning has left ice in a garden water tray. Later, the ice melts and the team warms some water for an experiment.
5.In your own words, explain what an element is. Give one example. (2 marks)
6.A neutral atom has 11 protons. How many electrons does it have, and what is the atom's overall charge? (2 marks)
7.The garden team melts an ice cube. Is melting a physical or chemical change? Explain how you know. (2 marks)
8.Balance the equation for making water: ___ H₂ + ___ O₂ → ___ H₂O. Write the smallest whole-number coefficients. (3 marks)
9.Water warms from 18°C to 63°C. Calculate the temperature change and show the subtraction you used. (2 marks)
10.The team observes bubbles when two liquids are mixed, and the mixture changes colour. Give one reason these observations might suggest a chemical reaction has happened. (2 marks)
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