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8th grade Science
Chemical Change
Question | Answer |
---|---|
CHEMICAL CHANGE.......... | SOMETHING YOU DIDN'T START WITH. The Substance is changed into a different substance. |
CHEMICAL CHANGE INCLUDES | BURING RUSTING DECOMPOSING TARNISHING |
BURNING ANYTHING | WHEN SOMETHING BURNS IT CAN NOT BURN AGAIN |
LAW OF CONSERVATION OF MATTER | MASS IS NEITHER CREATED NOR DESTROYED DURING A CHEMICAL REACTION |
ABSORPTION OF ENERGY | ENDOTHERMIC REACTION FEELS COLD |
PHOTOSYNTHESIS | ENERGY COMES FROM THE SUN |
CHEMICAL REACTION | IT RELEASES ENERGY IN THE FORM OF HEAT EXOTHERMIC |
EVIDENCE OF CHEMICAL REACDTION | 1.FORMATION OF A NEW GAS BUBBLES 2.FORMATION OF A NEW SOLID 3.COLOR CHANGE 4. CHANGE OF ENERGY WHEN A CHEMICAL CHANGES OCCURS ENERGY IS EITHER RELEASED OR ABSORBED HEAT/LIGHT |
EXOTHERMIC REACTION IS WHEN | RELEASE HEAT OR LIGHT OR BOTH |
EATING | CHEWING IS A PHYSICAL CHANGE ONCE SPIT TOUCHES THE FOOD CHEMICALS IN SALIVA BEGIN TO CHANGE THE FOOD CHEMICALLY |
Physical Change | A change in a substance that does NOT change what the substance is. |
Physical change evidence | change in shape, size, phase. |
What type of change is usually reversible | Physical |