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level: IMPORTANT

Questions and Answers List

level questions: IMPORTANT

QuestionAnswer
What is an ion?Electrically charged particles that form when a atom looses or gains electrons
What is a covalent bond?The attraction of 2 positive nuclei have for a shared pair of electrons
What is a ionic bond?The electrostatic attraction between positive and negative ions
What is a metallic bond?The attraction between positive ions and delocalised electrons
How to calculate mass?number of moles x GFM
What does 1 mole equal?1g of formula mass
How to calculate number of moles?mass divided by GFM
How to calculate GFM?Mass divided by number of moles
How to calculate concentration?Number of moles divided by volume
How to calculate volume?number of moles divide by concentration
How to calculate number of moles using concentration?concentration x volume
What does the concentration of a solution tell you?Number of moles of solute present in 1 litre of solution
How to calculate percentage mass?total mass of element in the compound ------------------------------------------------ X 100 formula mass of compound