Evidence of Chemical Reactions

Evidence of Chemical Reactions

•Temperature Change

•Heat is absorbed by the substances causing the temperature to decrease

•Heat is released by the substances causing the temperature to increase

SMOKE

Evidence of Chemical Reactions

Evidence of Chemical Reactions

•Fizzing

•When a gas is formed it may try to escape causing bubbles

Evidence of Chemical Reactions

Evidence of Chemical Reactions

•Color Change

•This is evidence of a chemical reaction only when the other properties have also changed.

Chemical Change

Not a

Chemical Change

Evidence of Chemical Reactions

Evidence of Chemical Reactions

•Precipitate Formed

•Precipitate is a solid substance formed when liquids are combined

Evidence of Chemical Reactions

Evidence of Chemical Reactions

•Light

•When a new substance is formed light energy can be produced.

COMPOUNDSELEMENTS

ON PAGE 12 or 13 IN YOUR NOTEBOOK, ON PAGE 12 or 13 IN YOUR NOTEBOOK, MAKE A DOUBLE-BUBBLE MAP TO MAKE A DOUBLE-BUBBLE MAP TO

COMPARE COMPOUNDS AND ELEMENTSCOMPARE COMPOUNDS AND ELEMENTS