New
New
Year 8

Common elements

I can communicate clearly some properties, uses and dangers of one or two common elements.

New
New
Year 8

Common elements

I can communicate clearly some properties, uses and dangers of one or two common elements.

Lesson details

Key learning points

  1. Hazard symbols are used to decribe the dangers of substances.
  2. Each element has its own distinct properties.
  3. Metalloid elements have some properties of metals and some properties of non-metals.

Common misconception

Elements cannot have metal and non-metal properties.

Introduction of the metalloids and discussion of their properties.

Keywords

  • Hazard - A danger associated with a substance.

  • Metalloid - An element that shares some properties with metals and some properties with non-metals.

Licence

This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).

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6 Questions

Q1.
What is an element?
a substance made from two or more different types of atoms bonded together
Correct answer: a substance made from one type of atom only.
a substance made from different types of atoms mixed together
Q2.
Which of these is a common property of metals?
Brittle
Insulator of heat
Correct answer: Shiny
Poor conductor of electricity
Q3.
Most non-metals are in the state at room temperature.
Correct Answer: gas
Q4.
Where are metals typically located on the periodic table?
Top right
Bottom left
Correct answer: Left side and centre
Only in the middle rows
Q5.
Which symbol suggests there may be a fire risk/hazard?
An image in a quiz
Correct Answer: An image in a quiz
An image in a quiz
An image in a quiz
An image in a quiz
Q6.
Match the property of the substance to its potential use.
Correct Answer:Good electrical conductor,Electrical wiring

Electrical wiring

Correct Answer:Good thermal insulator,Jackets and coats

Jackets and coats

Correct Answer:Flammable,Fuel

Fuel

Correct Answer:Shiny,Jewellery

Jewellery

6 Questions

Q1.
What does a hazard symbol on a substance indicate?
The substance is safe to use.
The substance is a metalloid.
Correct answer: The substance has certain risks associated with it.
The substance is a metal.
The substance is a non-metal.
Q2.
Which of the following is a characteristic of metalloids?
They all conduct electricity as well as metals.
Correct answer: They are all solid at room temperature.
Correct answer: They have properties of both metals and non-metals.
They are all gases at room temperature.
Q3.
Boron (B) is an example of a metalloid. Astatine (As) is sometimes classed as a metalloid. Give the elemental symbol of another metalloid.
Correct Answer: Si, Ge, As, Sb, Te
Q4.
What one word can be used to give the meaning of this hazard symbol?
An image in a quiz
Correct Answer: corrosive
Q5.
A hazard symbol is used to show...
Correct answer: a potential source of harm.
a high risk of an accident.
a low risk of an accident.
Q6.
Which of the following hazard symbols shows that a substance is very bad for the environment, and if swallowed could kill you or other organisms that consume it?
Correct Answer: An image in a quiz
An image in a quiz
Correct Answer: An image in a quiz
An image in a quiz
An image in a quiz
An image in a quiz