10559423
Description
Flashcards by Ellie Potellie, updated more than 1 year ago
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Created by Ellie Potellie
about 8 years ago
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| Question | Answer |
| What Is a Triad? | A group of three elements with similar chemical properties in which the atomic weight of the middle element is approx equal to the average of the other two |
| What is an atomic number? | An atomic number is the number of protons in the nucleus of an atom |
| What is an atomic mass number? | An atomic number is the number of neutrons and protons in the nucleus of an atom |
| What is an ion? | An Ion is an atom that has either lost or gained electrons. |
| What is 'The Law Of Conservation Of Mass'? | The Law Of Conservation Of Mass states that the total mass of products of a chemical reaction is the same as the total mass of reactions |
| What is 'The Law Of Conservation Of Matter'? | The Law Of Conservation Of Mass states that in any chemical reaction, matter is neither created nor destroyed but merely changes form |
| Acid + Metal equals? | Salt & Hydrogen |
| Acid + Base equals? | Salt + Water |
| Acid + Carbonate equals? | Salt water + Carbon dioxide |
| Most bases are? | Metals, Metal oxides, Metal Hydroxides and Amonia |
| What is Arrhenius's theory of Acid? | Arrhenius's theory of Acid is that an acid is a substance that fully dissociates in water. |
| According to Arrhenius's theory, what is a strong acid? | A strong acid is one which dissociates fully in water |
| What is Arrhenius's theory of bases? | Arrhenius's theory of bases is that a base is a substance that dissociates in water to produce OH- ions |
| According to Arrhenius's theory, what is a strong base? | A strong base is one which dissociates fully in water eg. NaOH |
| According to Arrhenius what do acids give off in solutions? | Arrhenius thought that an acid gives off H+ ions in solution |
| What are H+ ions? | H+ ions are protons, |
| What can H+ ions not do? | H+ ions can't exist independently |
| What happens when H+ ions react with water? | When the acid dissociates, the H+ ions react with water molecules |
| When the acid dissociates, the H+ ions react with water molecules, what is the chemical formula of this occurance? | H+ + H20 ---> H30+ |
| What is H30 ion called? | H30 is called the hydronium ion |
| What is a limit to Arrhenius theory? | A limit to Arrhenius's theory is that acids and bases are defined by reactions in water. |
| What is Bronsted-Lowry theory on acids? | Bronsted-Lowry theory on acids describes acids as substance that donates a proton |
| What is Bronsted-Lowry theory on bases? | Bronsted-Lowry theory on bases describes bases as substance that a accepts a proton |
| What is a Conjugate Pair? | Conjugate Pairs are acids and bases that exist in pairs. |
| What defines a Conjugate Pair? | A Conjugate Pair is when an acid donates/loses a proton and becomes a conjugate base and vice versa with bases |
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