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45 Cards in this Set

  • Front
  • Back

matter

anything that has mass and occupies space

energy

the capacity for doing work or producing heat

mass

a measure of the amount of matter that an object contains

volume

a measure of the space occupied by a sample of matter

qualitative observation

an observation uses five senses



quantitative observation

observations made with instruments such as rulers, balances, granulated, etc.

hypothesis

aproposed explanation made on limited evidence

mixture

two or more substances physically mixed

pure substances

substances that are made of one atom/molecule

heterogeneous mixture

mixture consists of visibly different substances

homogeneous mixture

has same uniform appearance

element

substance consisting of atoms which all have the same number of protons (simplest substance can not be broken down)

compound

mixture, consist of two or more separate elements

physical property

can be observed or measured without changing composition of matter

chemical property

any of a material's property that becomes evident during/after chemical reaction

physical change

affects the form of chemical reaction

chemical change

results in formation of new chemical

distillation

purifying a liquid by heating or cooling

chromatography

separation of mixture by passing it in solution as a vapor through a medium in which the components move at

filtering

pass substance through a device to remove unwanted material

evaporation

a type of vaporization of a liquid that occurs from the surface of a liquid into a gaseous phase

density

is mass per unit volume

periodic trends

arising from the arrangement of the periodic table, provides a tool to quickly predict an element's properties

signs of chemical reaction

- color


- formation of bubbles

glass of milk

homo

idine

element

magnesium chloride

compound

oatmeal

hetero

salad

hetero

aluminum

element

sugar

compound

rubbing alcohol

homo

red color

P

floating

P

flammability

C

conducting electricity

P

reactivity

C

boiling point

P

smell

P

hardness

P

salt dissolving in water

P

vinegar and baking soda react

C

rust

C

milk going sour

C

copper wire conducts electricity

P