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S6 1.1 DesClasMatter

S6 1.1 Describing and Classifying Matter

QuestionAnswer
What 2 things MUST matter have? mass and it takes up space
What is a substance? a single kind of matter that always has a specific composition
What is a physical property? a characteristic that can be observed without changing the matter into something else
True or False: Wood is an example of matter? True
True or False: Air is an example of matter? True
True or False: Electricity is an example of matter? False
True or False: Glass is an example of matter? True
True or False: An idea is an example of matter? False
Physical or Chemical: Oxygen is in water. Fish absorb oxygen from the water. Physical
Physical or Chemical: Water and carbon dioxide in leaves are converted to oxygen and sugar. Chemical
Physical or Chemical: Iron exposed to air and water and rust forms Chemical
Physical or Chemical: Wood is hard and inflexible. It makes good building material. Physical
What is a chemical property? a characteristic that describes something's ability to become something else
What is an atom? the basic unit from which all matter is made
What is the nucleus of an atom? the positively charged center of an atom
Where are the negative charges in an atom? they circle around the outside of the cell in a cloud
What is an element? a substance made up of only one type of atom
What is a molecule? a group of two or more atoms held together by chemical bonds
What is a chemical bond? a force of attraction between two or more atoms
How many hydrogens are there in water, H2O? 2
How many oxygens are there in water, H2O? 1
What is a compound? a substance made of two or more elements that are chemically combined in a set ratio
How many carbons does carbon dioxide, CO2, have? 1
How many oxygens does carbon dioxide, CO2, have? 2
What is a mixture? two or more substances that are together but their atoms are not chemically bonded
True or false: Cake mix is a mixture? True
True or false: A bowl of mixed nuts is a mixture? True
True or false: Water is a mixture? False
What is a homogeneous mixture? a mixture where it is very difficult to see the individual parts
What is a heterogeneous mixture? a mixture where each separate piece can easily be seen or identfied
Are mixed an example of a homogeneous or heterogeneous mixture? heterogeneous
Is cake mix an example of a homogeneous or heterogeneous mixture? homogeneous
Created by: mrdavis190
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