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WorksheetsChemistry Revision Yr 10
Total questions: 10
Worksheet time: 5mins
How do you determine an atomic number?
the number of protons
the number of neutrons
the mass
the number of protons and neutrons together
What is the element for atomic number 83?
Tantalum
Scandium
Bismuth
Iodine
What charge does an electron have?
Positive
Negative
Neutral
How many electrons can there be in the second shell?
7
10
2
8
What is a molecule?
They are made of only one kind of atom
2 atoms that join together
A substance formed by chemical union of 2 or more elements
When 2 or more substances are combined, but they are not chemically combined
Which group has the most elements?
Metal
Metalloid
Nonmetal
What is a covalent bond?
Electrons are shared
Electrons shared between many atoms (metal atoms)
Electrons are donated
Electrons are shared between nonmetal elements
What is the atomic number of manganese?
54.94
67.85
29.69
51.41
What does the Law of Conservation of Mass state?
That mass is neither created nor destroyed in any chemical reaection.
That mack is neither created nor destroyed in any chemical reaction.
That mass is neither created nor destroyed in any chemical reaction.
That mass niether nor destroyed in any chemical reaction.
How many protons are there in the element, cadmium?
67
52
49
48
