SHS Chemistry · Year 1
Mole Ratios, Chemical Formulae and Equations practice questions
Oxidation numbers, empirical and molecular formulae, stoichiometry, balancing equations and percentage yield.
25 questions in this topic: 15 recall, 4 applying skills and concepts and 6 strategic thinking. Every one carries a written explanation.
Sample questions
5 of 25 questions in this topic. Sign up to answer them and see the explanations.
- Question 1Recall
The oxidation number is best described as
- athe charge of an ion in a compound
- bthe mass of an atom
- cthe number of atoms
- dthe boiling point
- Question 2Skills & concepts
The prefix tetra- indicates how many atoms?
- aFour
- bTwo
- cThree
- dOne
- Question 3Strategic thinking
In a balanced equation, changing a coefficient changes the
- anumber of moles of that substance
- bidentity of the substance
- cformula of the compound
- dcharge on the ion
- Question 4Strategic thinking
The actual yield is usually less than the theoretical yield because
- areactions are rarely perfectly efficient in practice
- bthe calculation is always wrong
- cmass is destroyed
- dproducts are weightless
- Question 5Recall
The mole ratio is the ratio of the number of moles between
- atwo or more substances
- btwo atoms only
- cmass and volume
- dheat and time
Answer these and 20 more on Mole Ratios, Chemical Formulae and Equations
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Start practising freeMore Chemistry Year 1 topics
- Analysis of Organic Compounds
- Classifications of Organic Compounds
- Inter Atomic Bonding
- Intermolecular Bonding
- Introduction to Chemistry, Scientific Method and Atoms
- Periodic Properties
- The Concept of the Mole