1. Matter Review, Solubility, and Density

2. Atoms Elements The building blocks of Matter
Consists of Protons (+), Electrons (-),
and Neutrons (N).
Elements
Consists of only one kind of atom,
Cannot be broken down into a simpler type of matter by either physical or chemical means
Can exist as either atoms or molecules.
Images are from

3. Matter
Anything that has a mass and a volume

4. Mass: The amount of matter in something
A metal teaspoon, for example, contains more matter than a plastic teaspoon. Therefore, a metal teaspoon has a greater mass than a plastic teaspoon.

5. Volume: The amount of space something occupies.
*A bowling ball and a basketball take up approximately the same amount of space. Therefore, the two balls have about the same volume. *Gases have no definite volume or shape.

6. Molecules
A molecule consists of two or more atoms of the same element, or different elements, that are chemically bound together.
In the animation above, two nitrogen atoms
(N + N = N2) make one Nitrogen molecule .

7. Physical Property of Matter
Physical property: a property that can be observed without changing the identity of the substance.
Examples:
luster
malleability: the ability to be hammered into thin sheet
ductility: the ability to be stretched into a thin wire
melting point
boiling point
density
solubility
specific heat

8. Solubility
The ability of a substance to be dissolved in another substance.
Do Solubility Lab

9. Density=M/V Density is the amount of mass per unit of volume.
Density can be used to identify a substance.
The density of water is 1.0g/mL
Do Density Lab