Chemistry

3. any source of potential damage, harm or adverse health effects on something or someone
6. of, relating to, or exhibiting the methods or principles of science
8. a request for information
9. a flask having a wide base, narrow neck, and conical form, convenient in laboratory experimentation for swirling liquids by hand.
10. the pursuit and application of knowledge and understanding of the natural and social world following a systematic methodology based on evidence
11. transitions from one state to another
15. lab glass or plasticware used to prepare a solution
16. a well-substantiated explanation of an aspect of the natural world that can incorporate laws, hypotheses and facts
17. a property of matter that depends only on the type of matter in a sample and not on the amount
18. the ability of a substance to interact chemically with a second substance
19. a statement that the volume occupied by a fixed amount of gas is directly proportional to its absolute temperature, if the pressure remains constant

1. a characteristic of a substance that can be observed or measured without changing the identity of the substance
2. capable of being easily ignited and of burning quickly
3. an assumption, an idea that is proposed for the sake of argument so that it can be tested to see if it might be true
4. the ability of a substance to undergo a specific chemical change
5. a property that depends on the amount of matter in a sample
7. a basic law in chemistry describing the behavior of a gas held at a constant temperature
12. anything that takes up space and can be weighed
13. a change of materials into another, new materials with different properties and one or more than one new substances are formed
14. capable of destroying solid materials. tending to eat away or consume