C1.2.2 - Atoms, mixtures and compounds Flashcards Preview

SHHS - Science - C1.2 - Elements, atoms and compounds - Year 7 > C1.2.2 - Atoms, mixtures and compounds > Flashcards

Flashcards in C1.2.2 - Atoms, mixtures and compounds Deck (14)
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1
Q

Which images contain molecules?

A

A, B, C and D

2
Q

What is a compound?

A

A substance made up of atoms of 2 or more elements.

3
Q

What is a mixture?

A

A group of substances that are not chemically bonded together.

4
Q

In which state are the substances shown in the diagrams?

A

Gas

5
Q

Which images contain 1 type of molecule only and nothing else?

A

A, C and D

6
Q

How are properties of the compound H2O (water) different to the properties of its elements?

A

H2 - hydrogen is a gas

O - oxygen is a gas

H2O - water is a liquid

7
Q

Are the properties of a compound the same as the properties of the elements that make the compound?

A

No compounds have different properties compared to their elements.

8
Q

Salt is a common compound. What is the chemical name for salt?

A

Sodium Chloride

(NaCl)

9
Q

Which image shows a compound made from 3 different types of element?

A

C

10
Q

Which image shows a mixture?

A

B

11
Q

Which images show compounds?

A

A and C

12
Q

Compounds containing 2 elements always end in which suffix?

A

“ide”

e.g. sodium + chlorine –> sodium chloride

13
Q

What is a molecule?

A

When more than one atom is bonded together.

14
Q

The diagram below shows some particles of a substance at room temperature.

Explain what the diagram tells you about the substance.

A
  • The substance is made up of molecules.
  • The substance is in the gas state at room temperature…
  • …since its molecules are separate from each other and randomly arranged.
  • The substance is a compound…
  • …since it is made up of atoms of more than one element.
  • One molecule of the substance is made up of one atom of one element and two atoms of another element.