1. Ionic bonding involves the ________ of electrons, whereas covalent bonding involves the _______ of electrons.
A. transfer, sharing
B. removal, gain
C. sharing, loss
D. transfer, gaining

2.
Which scientist found that gas expands to fill the space of a container and is made of particles that can move?
A. Bohr
B. Boyle
C. Dalton
D. Democritus

3. When acids contact metal, they are ______.
A. protective
B. corrosive
C. non-reactive

4. Different types of matter melt at different temperatures.
True
False
...?