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Ch2.1 &2.3 Review
Question | Answer |
---|---|
What is anything that has mass and takes up space? | matter |
What is the study of the properties of matter and how matter changes? | Chemistry |
What is a single kind of matter that is pure? substance or solution | substance |
Name 2 properties of matter | Physical and Chemical properties |
This property can be observed without changing it into a new substance. Which property is it? | Physical Property |
This property describes a substance's ability to change into another substance. Which property is it? | Chemical Property |
What is the smallest possible piece of matter? | atom |
what do we call all the different kinds of atoms, or pure substances formed when the same kind of atoms combine. | elements |
What is formed when 2 or more atoms (elements) combine? | molecule |
What is formed when 2 or more DIFFERENT elements combine? | compound |
What do we call the attraction between 2 or more atoms that cause them to combine? | chemical bond |
Which type of mixture shows the different parts that make it up? | HETEROGENEOUS |
which type of mixture is so evenly mixed that you can't see the individual parts? | HOMOGENEOUS |
Name at least 3 ways you can separate mixtures | 1. evaporation 2. filtering 3. distillation (boiling) 4. magnet |
What kind of change does not change the substance only the form or appearance of the substance? | Physical Change |
What kind of change produces new substances with different properties than the original substances? | Chemical Change |
The fact that matter is not created or destroyed is the Law of what? | Conservation of Mass |
What is energy? | the ability to do work? |
A change in which energy is absorbed or taken in is endothermic or exothermic? | endothermic |
A change in which energy is released is endothermic or exothermic? | exothermic |
Is melting of ice endothermic or exothermic? | endothermic... |
Is the burning of a candle endothermic or exothermic? | exothermic |
List 4 types of Chemical changes. | oxidation, electrolysis, combustion, tarnishing |