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Bio chapter 2 and 3
section 2.1 and 2.2
Question | Answer |
---|---|
What is an atom | Smallest basic unit of matter |
What is an element | One particular type of atom |
What is a compound | Substance made of atoms of different elements bonded together in a certain ratio |
What is an ion | Atom that gained or lost one or more electrons |
What are one of the properties of water | High polarity |
What is a hydrogen bond | Attraction between a slightly positive hydrogen and a slightly negative atom |
What is an acid | Compound that releases a proton, hydrogen when it dissolves in water |
What is a base | Compound that remove ions from a solution |
What's cohesion | Attraction among molecules of a substance |
What's adhesion | Attraction among molecules of different substances |
What is a Ph scale | Measures how acidic or basic a substance is |
Can an element be broken down | no |
What charge does an electron have | negative |
What charge does a proton have | positive |
What charge does a neutron have | neutral/none |