Chemical levels- 2.1
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20 Terms
What does chemistry study?
Structure of matter
What is matter?
Anything with mass and volume
What are atoms?
Smallest units of matter
What determines an atom’s reactivity?
Electrons
What charge does a proton have?
Positive
What charge does an electron have?
Negative
What is the valence shell?
Outermost electron shell
What is a molecule?
Two or more atoms bonded
What is a compound?
Atoms of different elements bonded
What bond involves electron transfer?
Ionic bond
What bond involves sharing electrons?
Covalent bond
What are hydrogen bonds?
Weak attractions between molecules
What happens in a chemical reaction?
Bonds are formed or broken
What are reactants?
Starting materials in a reaction
What is a synthesis reaction?
Forms bonds (builds molecules)
What is a decomposition reaction?
Breaks bonds (splits molecules)
What defines organic compounds?
Contain carbon and hydrogen
Why is water important?
Universal solvent
What is pH?
Measure of hydrogen ion concentration
What does ATP provide?
Energy
