A mixture is made of two or more substances that (are/are not) chemically bonded.
are not
100
The SI unit of mass is _______.
g or kg
100
A ________________ change alters the form or appearance of matter, but does not turn any substance into a different substance.
physical change
200
A single kind of matter that is pure
substance
200
Each _____________ can't be broken down into other substances by chemical or physical means.
element
200
In this type of mixture, you can see the different parts and they can be easily separated.
heterogeneous mixture
200
The formula to find the volume of a cube is __________.
length x width x height
200
The three states of matter are:
solid, liquid and gas
300
Temperature, color, hardness and texture are examples of (physical/chemical) properties
Physical properties
300
Atoms combine to form larger particles called _________
molecules
300
Using a magnet to remove iron pieces from sand uses ___________ attraction.
magnetic
300
The amount of space that matter takes up is called:
volume
300
The law of conservation of mass says that matter can't be:
created or destroyed
400
When wood burns, it combines oxygen in the air and changes into the substances water and carbon dioxide. This flammability is a (chemical/physical property).
chemical property
400
When combining two or more atoms, they are held together by _________________.
chemical bonds
400
Using a filter to separate liquids from solids.
filtration
400
the measure of the mass of a material at a given volume is:
density
400
You mix two substances and the product feels cold. The change is (exothermic/endothermic).
endothermic
500
When substances boil or melt, they are undergoing a _________ change.
physical change
500
A _____________________ is made up of two or more elements combined in a set ratio, represented by a chemical formula.
compound
500
When left in the open air, liquid solutions can change to gas, leaving the solid components behind