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Acids & Bases term 2
Acids and Bases revision questions for exam and test for 2014
| Question | Answer |
|---|---|
| Define Compound | The substance formed by the chemical reaction of two or more different elements |
| Define Atomic Number | The number of protons and electons in one atom of an element |
| Define Mass Number | The total number of neutrons and protons in the nucleus of an atom of an element |
| How are ions formed? | When atoms lose or gain electrons in a chemical reaction |
| Define monoatomic ions | An ion consisting of a single atom |
| How do ions form ionic bonds? | When a metal and a gas react together, the single outer electron in the metal atom is transferred to the gas atom |
| What number range are bases on the pH scale? | 8-14 |
| What number range are acids on the pH scale? | 1-6 |
| What is a balanced symbol equation for neutralisation? | H+ + OH- reacts to form H20 |
| What is the balanced symbol equation for the product of carbon dioxide? | acid + carbonate reacts to form metal salt + water + carbon dioxide |
| What is the balanced symbol equation for the product of salt formation? | acid + base reacts to form metal salt + water |
| Define Isotope | Atoms with the same atomic number but different mass numbers |
| Define valence | The outside shell of an atom |
| Define Protons | Particles with a positive charge and about the same mass as a neutron |
| Define Neutrons | Particles with no charge and about the same mass as a proton |
| Define Electrons | Particles with a negative charge |
| What are the four groups of metal compounds that are bases? | Metal hydroxides, metal oxides, metal hydrogen carbonates, metal carbonates |
| What is the chemical formulae for Nitric Acid? | HNO3 |
| What is the chemical formulae for Sulfuric Acid? | H2SO4 |
| How would you test to see if carbon dioxide was present? | Limewater (if it turns cloudy, carbon dioxide is present) |
| Define Element | A substance that cannot be broken down into any other substances |
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tiegan.lilley