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chemical reactions
for science
Question | Answer |
---|---|
combination of 2 or more elements | compound |
a compound has different properties than the _that formed it | elements |
rust is a combination of iron and | oxygen |
the chemical name for rust is | iron oxide |
the chemical formula for rust is | Fe O 2 3 |
one substance into another is a | chemical change |
atoms breaks old links and make new links with other atoms is a | chemical reaction |
when substances are used to make a chemical reaction by writing is a | chemical equation |
on a left side of a chemical equation is a _on the the right side is a_ | reactant;products |
the total amount of mass of reactant and total amount of mass in the product that are both the same is | Law of Conservation of Mass |
a change of color on metal changes it is becomes | tarnish |
baking soda and vinegar is mixed it is a | chemical change |
when 2 solutions are mixed | precipitate |
when heat and light produces a chemical reaction reversing the reaction should | absorb energy |
plants use a chemical reaction called | photosynthesis |
plants and animals use a chemical reaction called | respiration |
a chemical reaction provides living things with food and | oxygen |