chapter 2 A And b

Question 0

2 main forms of energy

Answer 0

Kinetic and potential

Question 1

What 2 things is matter composed of ?

Answer 1

Atoms and elements

Question 2

Name the difference between kinetic and potential energy

Answer 2

Kinetic is energy in action.

Potential is stored energy

Question 3

What is matter

Answer 3

Anything that occupies space and has mass

Question 4

Mass

Answer 4

Amount of matter in an object

Question 5

Weight

Answer 5

Measurement of pull of gravity on an object

Question 6

Composition of matter

Answer 6

All matter is composed of elements

Question 7

How to a determine atomic number

Answer 7

Number of protons in the atoms nucleus (= # of electrons too)

Question 8

Mass number

Answer 8

Protons + neutrons

Question 9

Atomic weight

Answer 9

Average of mass numbers

Question 10

How many electrons can each she’ll hold

Answer 10

Shell 1. 2 electrons

2. 8 electrons
3. 17 electrons

Question 11

What is an isotope?

Answer 11

Same # protons did number neutrons

Question 12

Radio isotopes?!

Answer 12

Decay spontaneously heavier less stable

Question 13

Where are electrons found?

Answer 13

Move around nucleus in electron cloud or shell