Chapter 2 Flashcards
1
Q
What is matter?
A
Anything that has mass and occupies space
2
Q
What is chemistry?
A
The study of matter and its interactions
3
Q
What is an atom?
A
The smallest unit of matter that still retains its original properties
4
Q
What are atoms composed of?
A
Subatomic particles
5
Q
What are subatomic particles?
A
Protons- positively charges; reside in central core of atom called atomic nucleus; p+
Neutrons- have no charge; in atomic nucleus
Electrons- e-