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Matter
atoms molecules mixtures substances
Question | Answer |
---|---|
What is matter? | anything composed of mass and volume |
Name two types of matter | substances and mixtures |
Substances are made up of... | elements and compounds |
What is the difference between elements and compounds | an element is one type of atom its the simplest substance and a compound is 2 or more different elements joined chemically |
What is an atom? | basic unit from which matter is made....substances are different atoms |
What is a molecule | 2 or more atoms held together by chemical bonds |
What is a mixture? | homogeneous or heterogeneous |
What is the difference between a homogeneous and heterogeneous mixture | homo is two more substances evenly spread out ..can't see the separation and a hetero is unevenly spread out...can see the separation |
Is milk a homogeneous or heterogeneous | homogeneous |
Is salad dressing homogeneous or heterogeneous | heterogeneous |
What is another name for a homogeneous mixture? | solution |
Matter can be classified into what 2 things? | substances and mixtures |
What is made up of elements and compounds? | substances |
Homogeneous and heterogeneous are types of? | mixtures |
How can you separate mixtures? | boiling, filtration, evaporation, magnetic attraction, boiling etc. |
What are physical properties? | characteristics that can be observed |
List 4 physical properties | color, size, shape, texture, odor,hardness, density,luster phases of a liquid |
What is a physical change? | a change that doesn't produce a new substance like tearing paper |
list 4 examples of physical changes | boiling, melting, freezing,evaporating and condensing |
What is a chemical change? | a change that produces a new substance |
What is the Law of Conservation of Mass? | states that matter is neither changed nor destroyed during a physical or chemical change |
What are 3 examples of a chemical change? | corrosion, burning, rusting and digesting |
Is digestion of food and absorbing nutrients a physical or chemical change? | chemical change |
Is cracking an egg a chemical or physical change? | physical change |