Answer:
Lavoisier made an important contribution to chemistry by the law of conservation of mass
Explanation:
The law of conservation of mass tell us, that the mass doens't change in a system. You have the same mass at the begining and in the end of a reaction.
Matter is neither created, nor destroyed in a chemical reaction.
This law also states that mass of reactants is the same of products in any chemical reaction
Answer:
mass
Explanation:
It is the amount of matter .
What makes a question scientific is that we are able to test our hypothesis.
For example: Will increased sunlight cause more seeds to grow. We can test that simply by placing seeds in the sun and some out of the sun.
If you cannot test an hypothesis, then it is NOT scientific
For example: Macroevolution isn't a scientific question because we cannot test whether or not complex organisms come from simpler organisms. It can only be classified as an Hypothesis at best.
