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15
×
The atomic ______ of an atom is the number of protons it contains in its nucleus.
number
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15
×
A ________substance is made up of atoms from the same chemical element.
simple
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seesaw
Swap points!
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fairy
Take points!
5
10
15
20
25
×
fairy
Take points!
5
10
15
20
25
×
baam
Lose 25 points!
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15
×
The process by which atoms gain or lose electrons is called __________.
ionisation
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seesaw
Swap points!
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rocket
Go to first place!
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gift
Win 25 points!
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banana
Go to last place!
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15
×
The net electric charge of an ionised atom is called the _________ and it can be positive or negative.
oxidation number
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15
×
What charge to protons have?
positive
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15
×
The __________ is the sum of the protons and neutrons in the nucleus of the atom.
mass number
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15
×
What is the atomic symbol for silver?
Ag
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15
×
What charge do neutrons have?
neutral/no charge
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seesaw
Swap points!
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magnet
Take 15 points!
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shark
Other team loses 10 points!
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lifesaver
Give 15 points!
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15
×
An atom that has gained electrons is ____________ ionised.
negatively
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15
×
What element has the atomic symbol of K?
potassium
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15
×
An atom that has lost electrons is _________ ionised.
positively
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15
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The _________ of an element is the average mass of the mass numbers of its isotopes according to their relative abundance.
atomic mass
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15
×
What charge do electrons have?
negative
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