Lesson T6.1.5
T6.1.5 Atoms and molecules Quiz: KS3 Physics, Unit 6
20 questions
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Lesson T6.1.5, Atoms and molecules: 20 multiple choice questions for the KS3 Physics (National Curriculum), Unit 6: Matter and particles, written with Revision Ninja.
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The 20 questions
-
What is an atom?
- A mixture of cells
- A chemical compound
- The largest molecule
- Smallest element part
-
What is the defining feature of a chemical element?
- Two bonded elements
- One type of atom
- Variable compounds
- Dissolved molecules
-
What term describes two or more atoms bonded together?
- A molecule
- An electron
- An ion
- An element
-
How many atoms are there in one molecule of water?
- Three
- Four
- One
- Two
-
Which of these substances is a chemical compound?
- Hydrogen gas
- Air
- Salt solution
- Water
-
How did Dalton's model describe an atom?
- A plum pudding
- A solid sphere
- A nuclear cloud
- A hollow shell
-
How are particles arranged in a solid?
- Free and spread
- Regular and close
- Random and far
- Random and close
-
Which word describes a substance made of molecules that each contain only one type of atom?
- Element
- Mixture
- Solution
- Compound
-
What is the approximate diameter of a single atom?
- 1 millimetre
- 0.1 nanometres
- 100 micrometres
- 10 centimetres
-
Why can a sugar solution be separated by physical methods?
- Permanently fused
- Physically mixed
- Ionically linked
- Chemically bonded
-
What is true about the gases in an unbonded hydrogen and oxygen mixture?
- Forming water
- Not chemically bonded
- Creating a compound
- Chemically fused
-
Which particle feature explains how one gas mixes into another?
- Fixed lattice vibration
- Random particle motion
- Strong chemical bonds
- Rigid particle structure
-
Which of these substances is classified as an element?
- Carbon
- Water
- Sodium chloride
- Carbon dioxide
-
What makes atoms of the same element identical?
- Same total mass
- Same neutron count
- Same electron shell
- Same proton count
-
What is the structure of an oxygen gas molecule?
- Two bonded atoms
- Three bonded atoms
- Four bonded atoms
- Single free atom
-
How do the properties of a compound compare to its elements?
- Completely different
- Identical properties
- Always magnetic
- Slightly heavier
-
Which substance contains atoms of two different elements chemically joined?
- Carbon dioxide
- Oxygen gas
- Nitrogen gas
- Carbon solid
-
Why do scientists use models of atoms and molecules?
- Create new elements
- Weigh atoms directly
- Change state easily
- Explain hidden observations
-
What are the basic building blocks of all matter?
- Atoms and molecules
- Solids and liquids
- Energy and light
- Cells and tissues
-
Why can individual atoms not be seen with an ordinary light microscope?
- Too small
- Too transparent
- Absorb no light
- Move too fast
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