IG Chem – Chemical Formulae – OnlineTuition.com.my

Question 1 of 10

1 point(s)

When elements chemically combine, they form elements.

true
false

Question 2 of 10

1 point(s)

A compound can be represented by a chemical formula.

true
false

Question 3 of 10

1 point(s)

Each element has a unique chemical symbol containing one or two letters.

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false

Question 4 of 10

1 point(s)

Silver has the chemical symbol Si, derived from the Latin name argentum.

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false

Question 5 of 10

1 point(s)

The combining power of an element is related to the number of protons in the atom.

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false

Question 6 of 10

1 point(s)

Elements in Group V of the Periodic Table have a combining power of 3.

true
false

Question 7 of 10

1 point(s)

The combining power of elements in Groups V-VII is calculated as 8 – (group number).

true
false

Question 8 of 10

1 point(s)

Hydrogen is an exception and has a combining power of 2.

true
false

Question 9 of 10

1 point(s)

Magnesium oxide has the chemical formula Mg₂O.

true
false

Question 10 of 10

1 point(s)

When forming ionic compounds, the charges on ions must cancel each other out.

true
false

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