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A-level Chemistry Year 1
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The total number of protons plus neutrons in the atom shown above is
The number of electrons in the atom shown above is
The atomic number of the atom shown above is
Substances that contain only one type of atom.
The sentence above describes…
Which of the statements below are true?
1) The relative charge of a proton is 1+
2) The relative mass of a proton is 1
3) Protons are found in shells around an atom
State the symbol for an atom of the element missing from the Periodic Table below.
State the symbol for an atom of the element missing from the Periodic Table below.
Two or more different substances (either elements or compounds) that are not chemically bonded together.
The sentence above describes…
Two particles that have the same number of protons but a different number of neutrons in their nuclei.
The sentence above describes…
Atoms with the same number of protons but different numbers of neutrons are known as: