Lesson 2: The Atom

Question 1

Element

Answer 1

a substance that cannot be separated or broken down into similar substances by chemical means

Question 2

How do Atoms make up matter?

Answer 2

atoms are the smallest particles into which an element can be divided and still be the same element, atoms are the basic unit of matter

Question 3

Current model of atom

Answer 3

the atoms of each element are unique, the nucleus is the main element and there are protons and neutrons in the nucleus, electrons move around the nucleus in the electron cloud

Question 4

Electron

Answer 4

negative charge

Question 5

Protons

Answer 5

positively charged

Question 6

Neutrons

Answer 6

negative charge

Question 7

Nucleous

Answer 7

small, dense, positive charge

Question 8

Mass number

Answer 8

total number of protons and neutrons

Question 9

Atomic number

Answer 9

number of protons in the nucleus of an atom

Question 10

The four forces

Answer 10

gravity, electromagnetic force, the strong force, and weak force