Question

concept 2 notes: properties of matter
physical properties: properties that can be observed or measured without changing the of the substance

• ex. mass, , shape, size, , luster, hardness, etc.

melting point: temperature at which a becomes a
boiling point: temperature at which a becomes a
viscosity: a fluid’s to

• a physical property only of
• can change with
• think “how it is”
• ex. viscosity of syrup is high and of water is low

solubility: a measure of how well a solute in a solvent
solute = what is (ex. lemonade powder)
solvent = what is (ex. water)
solution = the (ex. lemonade)
density: measure of or consistency of a material
per unit of

• measured in or
• density doesn’t change, regardless of

mass is measured in (g), using a
volume is measured in or , using 2 different methods
density =

Explanation:

Physical properties are observable or measurable without altering a substance's chemical composition. Melting and boiling points are phase - change temperatures. Viscosity is a fluid's resistance to flow, which varies with temperature. Solubility is about a solute dissolving in a solvent. Density is mass per unit volume, measured in g/cm³ or g/mL, and is independent of sample size. Mass is in grams, measured with a balance, and volume can be in cm³ or mL, measured in different ways.

Answer:

Physical Properties: properties that can be observed directly or measured without changing the chemical composition of the substance.

• Ex. Mass, volume, shape, size, color, luster, hardness, etc.

Melting point: temperature at which a solid becomes a liquid
Boiling point: temperature at which a liquid becomes a gas
Viscosity: a fluid’s resistance to flow

• A physical property only of fluids
• Can change with temperature
• Think “how thick it is”
• Ex. Viscosity of syrup is high and of water is low

Solubility: a measure of how well a solute dissolves in a solvent
Solute = what is dissolved (Ex. Lemonade powder)
Solvent = what is doing the dissolving (Ex. Water)
Solution = the mixture (Ex. Lemonade)
Density: measure of compactness or consistency of a material

• Mass per unit of volume
• Measured in g/cm³ or g/mL
• Density doesn’t change, regardless of sample size

Mass is measured in grams (g), using a balance
Volume is measured in cm³ or mL, using 2 different methods
Density = $\frac{mass}{volume}$