Size & Mass of Atoms (AQA GCSE Chemistry Combined Science): Quizzes

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Size & Mass of Atoms
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What is the approximate radius of an atom?

0.10.1 nm

What is the radius of an atom in metres?

1×10101 \times 10^{-10} m

What is the approximate radius of the nucleus?

1×10141 \times 10^{-14} m

How does the nucleus radius compare to the atom's radius?

Less than 1/10,000

What is the radius of a typical bacterium?

1×1061 \times 10^{-6} m

What is the approximate radius of a human hair?

1×1041 \times 10^{-4} m

What is the relative mass of a proton?

11

What is the relative mass of a neutron?

11

What is the relative charge of an electron?

1-1

Where is nearly all of the atom's mass concentrated?

In the nucleus

Which subatomic particles are found in the nucleus?

Protons and neutrons

How do the charges of protons and electrons compare?

Equal and opposite

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