GCSE Chemistry – C2

Protons have a relative charge of…
+1
Neutrons have a relative charge of…
0
Electrons have a relative charge of…
-1
Protons and Neutrons have a relative mass of…
1
Electrons have a relative mass of…
1/1836
The periodic table was created by…
Mendeleev in 1869.
Mendeleev predicted that…
New elements would be discovered.
The number above an element symbol is…
Mass number.
The number below and element symbol is…
Atomic number.
Isotopes are the same element with a different number of…
Neutrons.
The first shell of electrons in an atom has only…
2 electrons.
Positive ions are called…
Cations.
Negative ions are called…
Anions.
Metal ions make ______ when burned…
Colours.
A covalent bond is a…
Shared pair of electrons.
Immiscible liquids do not…
Mix.
Group 1 of the periodic table contains…
Alkali Metals.
Group 7 of the periodic table contains…
Halogens.
Group 0 of the periodic table contains…
Noble gases.
A more reactive element replacing a less reactive element is called a…
Displacement reaction.
The theory that more particles in a reaction increase the rate of reaction is called…
Collision theory.
(Actual yield/theoretical yield) * 100 is…
Percentage yield.
Relative formula mass is…
the relative atomic mass of each element in the equation added.
Empirical formula is…
The ratio between elements in a compound.
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