Physical/Chemical Changes and Characteristic Properties
100
A quality of a substance that never changes and can be used to identify the substance.
What is a characteristic property?
100
The equation for density.
What is D=M/V
100
The different units that can be used for density.
What is g/mL or g/cm3?
100
oxygen
What is an element?
100
burning a piece of paper
What is a chemical change?
200
A substance made of two or more elements chemically combined.
What is a compound?
200
The equation for volume.
What is V=M/D?
200
A block of aluminum occupies a volume of 15.0 mL and weighs 40.5 grams. What is its density?
What is 2.7 g/mL?
200
iron and sand
What is a mixture?
200
Chewing food
What is a physical change?
300
The smallest particle of an element.
What is an atom?
300
The equation for mass.
What is M=DV?
300
Calculate the density of a cube with a side of 15 cm and a mass of 3000 grams.
What is .88 g/cm3?
300
salt water
What is a solution?
300
Crushing a can
What is a physical change?
400
A substance made of only one kind of matter and having definite properties.
What is a pure substance?
400
Finding the volume of an irregular object.
What is using a graduated cylinder and measuring the difference between the water in the beginning and how much it rose?
400
A gold-colored ring ahs a mass of 18.9 grams and a volume of 1.12 mL. Is the ring pure gold? (the density of gold is 19.3 g/mL)
What is no?
400
aluminum
What is a pure substance and an element?
400
Dying your hair
What is a chemical change?
500
A measure of the force of gravity on an object vs. A measure of how much matter is in an object.
What is weight vs. mass
500
An object that has a density of >1.0 grams per cubic centimeter.
What is an object that would sink in water?
500
28.5 grams of iron is added to the graduated cylinder containing 45.5 mL of water. The water level rises to the 49.1 mL mark. From this information, calculate the density of iron.
What is 7.9 g/mL?
500
Explain how to separate salt water.
What is boiling the water to separate the salt and the water?
500
Name three characteristic properties
What is density, hardness, boiling point, melting point?