chem 1,1

Property of a substance

characteristic that’s typical and doesn’t change, allows us to recognize substance

Physical properties

properties you can observe without changing the substance to a new substance; appearance, color, smell, opacity, hardness, density, viscocity, melting/boiling point, magnetic attractions

Mixture and pure substance

a mixture consists of 2 or more substances and pure substance of only 1 substance

Chemical properties

describes a substance’s ability to undergo a chemical change and form a new substance; heat of combustion, flammability, reactivity to water, pH, radioactivity

Physical quantities

properties that can be measured written as a number with a unit

Why are mass, temperature, and volume not properties?

They can change

density

a measure how much matter is packed into a given area

Density formula

density=mass/volume

Density formula in symbols

p=m/v

What is 1mL equal to?

1 cm3

what units are used in density?

g/cm3, g/mL, kg/m3

How to calculate mass with density formula?

m=p x v

How to calculate volume with density formula?

v = m/p

To go from mg to g or from g to kg

divided by 1000

To go from g to mg or from kg to g

x 1000

To go from cm3/mL to dm3/L or from dm3/L to m3

divided by 1000

To go from m3 to dm3/L or from dm3/L to cm3/mL

x1000