chemistry tes.

physical or chemical? AG silver tarnishes

C

physical or chemical? baking soda reacts to vinegar

C

physical or chemical? food is cooked and digested

C

physical or chemical? grass grows

C

physical or chemical? milk sours

C

physical or chemical? alc evaporates

P

physical or chemical? apple is cut

P

physical or chemical? heat changes to steam

P

physical or chemical? table salt dissolves in water

P

define physical properties

a substance that can be observed or measured without ruining or changing what the substance looks like.

what classifies something as matter

anything that takes up space.

define chemical changes

change in chemical makeup

define physical changes

change in size shape and state of matter/ senses

what classifies materials as a pure substance

elements and compounds cannot be separately physically

what classifies materials as a mixture

homo and hetero can be separated physically

define chemical properties

how an element or compound reacts with other elements or compounds.

whats the difference between intensive and extensive properties

intensive is independent on the amount of matter present and extensive is dependent.

whats the difference between chemical and physical change.

physical change in size, shape, or state of matter. chemical change is in the make of something.

compound

what is this

element

what is this

mixture of compounds

what is this

mixture of compounds and elements

what is this

mixture of elements

what is this

5 pieces of evidence chemical change has occurred.

- color change - odor - temp change - evolution of gas - precipitate