Ch F6 Chemistry & Chemical Safety Flashcards
Exam Prep
1
Q
Do creams, lotions, masks, and makeup contain chemicals if they are natural?
A
Yes
2
Q
What is any substance that occupies space and has weight?
A
Matter
3
Q
What is the simplest form of chemical matter?
A
An element
4
Q
How many known elements are there?
A
118
5
Q
How many known elements occur naturally on Earth?
A
98
6
Q
What are basic units of matter?
A
Atoms
7
Q
A