Miscellaneous
Why is baking a cake a chemical change?
Because you cannot un-bake a cake, it has been changed forever.
The substance that gets dissolved.
Solute
I have a box with a mass of 24 pounds and a volume of 6ft3. What is its density?
4 lbs/ft3
Cooking a raw egg and making a scrambled egg.
Chemical Change
Definite size, shape, and volume.
Solid
What is matter?
Anything that has mass and volume.
The basic building block of matter.
Atom
I have a suitcase with a volume of 6 feet3, and a density of 8 lbs/ft3. What is its mass?
48 lbs
Taking wood and making a chair.
Physical Change
Definite size, but not shape or volume.
Gas
What is an element?
Substance that is made up of only one kind of atom.
The substance that does the dissolving.
Solvent
I have a tub with a mass of 100 lbs, and a density of 5 lbs/ft3. What is its volume?
20ft3
Melting Point
Definite size and volume, but not shape.
Liquid
What does the Theory of Conservation of Mass state?
That matter can neither be created or destroyed.
Changes a phase of matter.
Thermal Energy
I have a cement block with a volume of 30 lbs, and a density of 3 lbs/ft3. What is the volume of my block?
10 ft3
Burning a piece of paper.
Chemical Change
What is the fourth state of matter that was briefly discussed in class?
Plasma
What is the difference between a physical and chemical change?
The amount of a substance that can be dissolved in another substance.
Solubility
I have a rubber ball with a volume of 2 in3, and a density of 6 oz/in3. What is the mass of the rubber ball?
12 oz
Burning
Chemical Property
A substance that we use in everyday life that exists in all three states.
Water