Atoms, elements and compounds

Define and identify atoms, elements and compounds. Name compounds from their formula.

Quiz:

Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.Which is the correct symbol for carbon?

1/6

Q2.Match the definition to the term.
  • element
  • compound
  • molecule
  • atom
  • two or more atoms bonded together
  • the smallest unit of matter
  • two or more different elements chemically bonded together
  • a substance made from one type of atom

Where you see this icon you can drag and drop! If you are using your keyboard select and move using space and the arrow keys.

2/6

Q3.What is the smallest unit of matter?

3/6

Q4.All 118 known elements are displayed in the .

Fill in the blank.

4/6

Q5.Calcium is added to hydochloric acid to produce calcium chloride and hydrogen. What are the two reactants?

Select two (2) boxes

5/6

Q6.Iron oxide breaks down into iron and oxygen. What are the two products?

Select two (2) boxes

6/6

Quiz:

Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.Which is the correct symbol for carbon?

1/6

Q2.Match the definition to the term.
  • element
  • compound
  • molecule
  • atom
  • two or more different elements chemically bonded together
  • the smallest unit of matter
  • a substance made from one type of atom
  • two or more atoms bonded together

Where you see this icon you can drag and drop! If you are using your keyboard select and move using space and the arrow keys.

2/6

Q3.What is the smallest unit of matter?

3/6

Q4.All 118 known elements are displayed in the .

Fill in the blank.

4/6

Q5.Calcium is added to hydochloric acid to produce calcium chloride and hydrogen. What are the two reactants?

Select two (2) boxes

5/6

Q6.Iron oxide breaks down into iron and oxygen. What are the two products?

Select two (2) boxes

6/6

Video

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Worksheet

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This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Atoms, elements and compounds

Don’t worry if you get a question wrong! Forgetting is an important step in learning. We will recap next lesson.

Q1.All diagrams show an element, except one. Which does not show an element?

1/6

Q2.A substance that has two or more different elements chemically bonded together is a .

Fill in the blank.

2/6

Q3.Elements are determined by the number of in the nucleus.

Fill in the blank.

3/6

Q4.Match the example to the term.
  • mixture
  • compound
  • element
  • water
  • oxygen
  • air

Where you see this icon you can drag and drop! If you are using your keyboard select and move using space and the arrow keys.

4/6

Q5.The name of the compound that contains one potassium atom, one carbon atom and three oxygen atoms is .

Fill in the blank.

5/6

Q6.The formula for the compound that contains one potassium atom, one carbon atom and three oxygen atoms is ...

6/6

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Atoms, elements and compounds

Don’t worry if you get a question wrong! Forgetting is an important step in learning. We will recap next lesson.

Q1.All diagrams show an element, except one. Which does not show an element?

1/6

Q2.A substance that has two or more different elements chemically bonded together is a .

Fill in the blank.

2/6

Q3.Elements are determined by the number of in the nucleus.

Fill in the blank.

3/6

Q4.Match the example to the term.
  • mixture
  • compound
  • element
  • oxygen
  • air
  • water

Where you see this icon you can drag and drop! If you are using your keyboard select and move using space and the arrow keys.

4/6

Q5.The name of the compound that contains one potassium atom, one carbon atom and three oxygen atoms is .

Fill in the blank.

5/6

Q6.The formula for the compound that contains one potassium atom, one carbon atom and three oxygen atoms is ...

6/6

Lesson summary: Atoms, elements and compounds

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