chemistry of life Flashcards
1
Q
matter?
A
takes up space.
2
Q
elements?
A
pure substance.
3
Q
atoms?
A
smallest particles.
4
Q
nucleus?
A
made up of protons and neutrons.
5
Q
ions?
A
unequal number of protons and neutrons.
6
Q
compounds in molecules?
A
compounds are 2 or more atoms. molecules are the smallest part of a compound. chemical bonds hold atoms together. different energy levels. unable state. share, steal and give away electrons to reach levels.
7
Q
non polar covalent?
A
shares electrons equally.
8
Q
polar covalent?
A
shares electrons unequally.
9
Q
ionic bonds?
A
give one, gain one ( + –> - )
