1
What is the unit of electric charge?
Coulomb
smallest basic unit
The atom
According to Dalton's atomic theory, how are atoms of different elements characterized?
different from each other
A proton has what type of electric charge?
Positive
Atoms can bond together to form molecules, some of which are compounds. T/F?
True
Explain the difference between compounds and molecules
molecules are two or more atoms.
Compounds are two or more elements.
What happens when two like charges are brought close together?
They repel each other
What is an example of a compound?
H2O
what did Thomson discover through his experiments with cathode rays?
Electrons
What are allotropes or give and example on one.
Different forms of the same element that exist in the same physical state but have different atomic arrangements and, consequently, different properties
/ phosphorus
Electrons in a hydrogen atom are physically identical to electrons in a uranium atom. T/F?
true
Can mass be created or destroyed during a chemical reaction?
No. Only rearranged