Chesmistry C4

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What is the Nucleus of an atom?
It is in the middle of the atom and contains protons and neutrons. It also has a positive charge. Almost the whole mass of the atom is concentrated in the nucleus
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What are electrons?
They move around the nucleus and are negatively charged. They are arranged in shells around the nucleus.
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What are the relative masses and charges of protons, neutrons and electrons?
Proton- Relative mass= 1 Charge= +1 Neutron- Relative mass= 1 Charge= 0 Electron- Relative mass= 0.0005 Charge= -1
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What are the number of protons always equal to in a neutral atom?
What are the number of protons always equal to in a neutral atom?
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What are the symbols for solid, liquid, gas and desolved in water?
s (solid) l (liquid) g (gas) aq (desolved in water)
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What flame colours do lithium, sodium and Potassium produce?
red
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Other cards in this set

Card 2

Front

What are electrons?

Back

They move around the nucleus and are negatively charged. They are arranged in shells around the nucleus.

Card 3

Front

What are the relative masses and charges of protons, neutrons and electrons?

Back

Preview of the front of card 3

Card 4

Front

What are the number of protons always equal to in a neutral atom?

Back

Preview of the front of card 4

Card 5

Front

What are the symbols for solid, liquid, gas and desolved in water?

Back

Preview of the front of card 5
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