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unit 2 chap 1
test
question | answer |
---|---|
what's property | something you can observe or measure about something that helps you identify or describe it |
what is substance | matter made up of 1 kind of atom or molecule |
what is a mixture | matter made up of more than 1 substance |
what is observing | to use any of the 5 senses to gather info abt smt |
mattter is ________________________ | what we are made up of |
an atom is _________________________ | a microscopic piece of matter |
mocelcule =________________________ | a group of atoms joined together |
why do scientists have models? | to answer a question abt the real world |
what does attract mean? | to pull an object without touching it |
why do we use evidence | to support a claim |
what is a inference | smt you figure out by based on observations and what u already know |
_________ are the smallest peice of matter | ATOMS |
all molecules are the ______ | SAME |
______ molecules are highly attracted to each other and many other kinds of molecules | WATER |
_________ is a technique used to separate mixtures | CHROMATOGRAPHY |
all matter is made up of ______ | ATOMS |
different molecules have different __________ | PROPERTIES |