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Which property of a substance is not affected by physical changes?
molecule
mixture
hardness
reactivity
1.6 g/mL
lighter than air
iron
keep their properties
Diamond is know for its
molecule
mixture
hardness
reactivity
1.6 g/mL
lighter than air
iron
keep their properties
A group of atoms that acts as a unit is called a(n)
molecule
mixture
hardness
reactivity
1.6 g/mL
lighter than air
iron
keep their properties
The difference substances in a mixture
molecule
mixture
hardness
reactivity
1.6 g/mL
lighter than air
iron
keep their properties
Which of the following is an element
molecule
mixture
hardness
reactivity
1.6 g/mL
lighter than air
iron
keep their properties
Helium is used in balloons because it is
molecule
mixture
hardness
reactivity
1.6 g/mL
lighter than air
iron
keep their properties
What is the density of a sample liquid that has a volume of 125 mL and a mass of 200 g?
molecule
mixture
hardness
reactivity
1.6 g/mL
lighter than air
iron
keep their properties
Which of the following is not a pure substance
molecule
mixture
hardness
reactivity
1.6 g/mL
lighter than air
iron
keep their properties
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