Unit 1

anything that has mass or volumecan be in solid, liquid, or gas states

"a property that you can observe without changing one kind of matter into something new"

"You can describe them in words, but you cannot measure them or express them numerically."physical statecolourodourcrystal shapemalleabilityductilityhardnessbrittleness

"can be measured and expressed numerically"melting pointboiling pointdensitysolubilityelectrical conductivitythermal conductivity

"a property that you can observe when one kind of matter is converted into a different kind of matter"reactivity with waterreactivity with airreactivity with pure oxygenreactivity with acidsreactivity with pure substancescombustibility (flammability)toxicitydecomposition

a standard system of measurement called the International System of Units which allows scientists anywhere in the world to describe matter in the same quantitative language

the amount of matter in an objectmeasured by:kilogram (kg)gram (g)milligram (mg)with a balance

the distance between two pointsmeasured bymetre (m)centimetre (cm)millimetre (mm)with a ruler

the amount of a substanceunit: mole (mol)calculated not measured

the hotness or coldness of a substancemeasured bykelvin (K)degrees Celsius ( ̊C)with a thermometer

the capacity to do work (to move matter)unit: joule (J)calculated, not measured

the mass per unit of volume of a substancemeasured bykilograms per cubic metre (kg/m3)grams per cubic centimetre (g/cm3)calculated or measured

the amount of space that an object occupiesmeasured by cubic metre (m3)cubic centimetre (cm3)litre (L)millilitre (mL)with a beaker, graduated cylinder, or pipette; may also be calculated

physical combinations of matter in which each component retains its identity

components are blended so that it looks like a single substance.

all components are visible

matter that has a definite composition

matter that cannot be decomposed into simpler substances

matter in which two or more elements are chemically combined