Relative formula Mass (Edexcel GCSE Chemistry): Quizzes
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Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What does the symbol Ar represent?
What does the symbol Ar represent?
Relative atomic mass
Which atom is used as the standard for comparing relative atomic mass?
Which atom is used as the standard for comparing relative atomic mass?
Carbon-12
Where can you find Ar values for different elements?
Where can you find Ar values for different elements?
On the periodic table
What units do Ar and Mr have?
What units do Ar and Mr have?
No units
What does the symbol Mr stand for?
What does the symbol Mr stand for?
Relative formula mass
What is relative formula mass (Mr) used for?
What is relative formula mass (Mr) used for?
Compounds
What is the Mr of if Ar of C is 12 and Ar of O is 16?
What is the Mr of if Ar of C is 12 and Ar of O is 16?
44
How many oxygen atoms are in the formula ?
How many oxygen atoms are in the formula ?
2
What is the first step in calculating Mr of a compound?
What is the first step in calculating Mr of a compound?
Find the chemical formula
How do you calculate Mr for ionic compounds like NaCl?
How do you calculate Mr for ionic compounds like NaCl?
In the same way as other compounds