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Year 7 foundation: C1.10 Elements
17 questions · 87 marks, in lesson order.
Metals and non-metals
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A solid sample is shiny when scratched, bends when pressed and completes an electrical circuit.
Name the metal property shown by each of the three observations.
(3)Explain why one observation on its own is not enough to classify the sample.
(1)Total for this question: 4 marks
Metals and non-metals
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A meteorite landed on Earth. It contained a new element. Scientists called the element jovium.
Which two properties suggest that jovium could be a metal? Tick two boxes.
(2)A scientist put a piece of the meteorite in water and stirred it. This produced a blue solution with tiny, solid, black particles in it. He separated the black particles from the blue solution using a funnel and filter paper. Give the name of this method of separation.
(1)The diagram shows the results. What do the labels A and B show?
(2)The scientist poured the contents of the flask into a dish. Two days later there were blue crystals in the dish, but no liquid. What happened to the liquid in the dish?
(1)Total for this question: 6 marks
Metals and non-metals
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Different elements are used for different objects: copper for the base of a saucepan, gold for a ring, helium in a balloon, and mercury in a thermometer.
Choose the reason for using each element.
(4)Which of the four elements is not a metal?
(1)Total for this question: 5 marks
Metals and non-metals
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Six objects are made from different materials: an iron nail, a steel paper-clip, silver earrings, a gold ring, a copper bracelet and an aluminium can.
Complete the sentences.
(2)The objects are made from materials that are all types of . All the materials are good conductors of electricity and .
Give one object that could rust.
(1)An electric cable contains copper wires covered by an insulating material. What material could be put around the wires to insulate them?
(1)Why is this insulating material needed?
(1)Which pair of objects is attracted to a magnet?
(1)Total for this question: 6 marks
Metals and non-metals
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An alloy is a mixture of elements. The table shows the mass of each element in 100 g of five different alloys.
| alloy | lead | tin | copper | zinc | carbon | iron | chromium | nickel |
|---|---|---|---|---|---|---|---|---|
| bronze | 4 | 95 | 1 | |||||
| solder | 62 | 38 | ||||||
| steel | 1 | 99 | ||||||
| stainless steel | 70 | 20 | 10 | |||||
| brass | 67 | 33 |
Which alloy in the table contains an element which is a non-metal?
(1)Which two alloys in the table contain only two metals? Tick two boxes.
(1)Another alloy called nichrome contains only the elements chromium and nickel. 100 g of nichrome contains 20 g of chromium. How much nickel does it contain?
(1)Before 1992, two-pence coins were made of bronze. Steel rusts but bronze does not rust. Why does bronze not rust? Use information in the table to help you.
(1)Rusting requires water and a gas from the air. Give the name of this gas.
(1)Total for this question: 5 marks
Metals and non-metals
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People ride in a balloon whose basket is fixed to the end of a steel cable. A man brings the balloon down by winding the steel cable around a winch.
Which two properties of steel make it suitable for the cable? Tick two boxes.
(2)Which one of these six properties of steel is never useful?
(1)| gas | mass of 1 m³ of gas / kg |
|---|---|
| hydrogen | 0.1 |
| helium | 0.2 |
| air | 1.2 |
| oxygen | 1.3 |
| carbon dioxide | 1.8 |
Many years ago hydrogen was used in balloons that carried people. Hydrogen is no longer used because it is dangerous. Why is it dangerous to use hydrogen?
(1)Which other gas in the table can be used in a balloon so that it can go up in the air?
(1)Total for this question: 5 marks
Metals and non-metals
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Copper is used for the base of a saucepan, for coins and for the wires in a cable.
Choose the reason for using copper for each object.
(3)Brass is a mixture of copper and zinc. Some keys are made from brass. Why is brass more suitable than copper for a key? Tick two boxes.
(2)Zinc melts at 420 °C. Copper melts at 1085 °C. A scientist heated a mixture of pieces of zinc and pieces of copper to 600 °C in a dish. What would be in the dish at 600 °C?
(1)Total for this question: 6 marks
Metals and non-metals
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Six objects in Sophie’s garden are made of different materials: an aluminium greenhouse frame, a slate roof tile, an iron gate, a plastic plant pot, a marble statue and a steel watering can.
Which two objects are made of rock? Tick two boxes.
(1)Which two of these objects are made of metal? Tick two boxes.
(1)A gas in the air reacts with iron to make it rusty. Give the name of this gas.
(1)What could you do to an iron gate to protect it from this gas in the air?
(1)Sophie tests each material with a magnet. Which two materials are attracted to the magnet? Tick two boxes.
(2)Total for this question: 6 marks
Groups and periods
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Element A has electron arrangement 2,8,1. Element B has electron arrangement 2,1.
Give the period of each element and explain how you know.
(1)Which group are both elements in? Give the reason.
(1)What does this tell you about how A and B react? Will they react in exactly the same way?
(2)Total for this question: 4 marks
Groups and periods
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The diagram shows the outline of part of the periodic table. The shaded area contains only metal elements.
Two other areas also contain only metal elements. Which areas contain only metal elements? Tick two boxes.
(1)Copper is a metal. At room temperature copper is a strong solid. Give two other properties of copper that show it is a metal.
(2)When copper metal is heated it reacts with a gas in air. What is the chemical name of the product formed?
(1)Which statement describes what happens in a chemical change but not in a physical change?
(1)Total for this question: 5 marks
Groups and periods
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Element X is in Group 2, Period 3. Element Y is in Group 2, Period 4. Element Z is in Group 7, Period 3.
Which two elements would you expect to have the most similar chemical reactions?
(1)Explain your answer to (a).
(1)X is a shiny solid that conducts electricity. Predict one property of Z and give a reason.
(2)Total for this question: 4 marks
The elements of Group 1
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Potassium reacts more vigorously with water than lithium.
Explain why potassium reacts more vigorously than lithium.
(4)Name the two products formed when either metal reacts with water.
(1)Total for this question: 5 marks
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