Elements and compoundssssss Flashcards
scienceeeeeeeeeeeeee
1
Q
What is an atom?
A
The smallest particle of an element.
2
Q
What is atomic mass?
A
Number of protons and neutrons
3
Q
Atomic number
A
The number of protons in an atom
4
Q
Proton
A
Positively charged particle
5
Q
What is a mixture ????????????????
A
It is an impure substance made up of 2 or more elements or compounds which are not chemically bonded together.
6
Q
The most abundant element on earth is….
A
HYDROGEN
7
Q
what is sublimation
A
the transition of a substance directly from the solid to the gas state
8
Q
What is the basic unit of life?
A
The cell
9
Q
Mitosis is..?
A
the process of making new body cells
10
Q
A
11
Q
A
