CCa study guide

Question 1

Independet variable

Answer 1

It is a variable that stands alone and isn’t changed by the other variables you are trying to measure

Question 2

dependent Variable

Answer 2

It is something that depends on other factors

Question 3

Theory

Answer 3

means an untested hunch or guess without supporting evidence.

Question 4

Mass

Answer 4

the ammount of matter an object is made of

Question 5

Matter

Answer 5

Matter is anything that takes up space and can be weighed.

Question 6

Condensation

Answer 6

Gas to liquid

Question 7

What is a proton what is its charge and where is it located

Answer 7

Positive molecules in the nucleus

Question 8

what is a neutron what is its charge and where is it located

Answer 8

Neutral molecules int the nucleus

Question 9

what is an electron what is its charge and where is it located

Answer 9

Negative particles that float around the nucleus’s in the electron cloud

Question 10

What is the nucleus

Answer 10

is a positively charged region at the center of the atom. It consists of two types of subatomic particles packed tightly together. protons and neutrons

Question 11

What is an element

Answer 11

A substance that cannot be broken down into simpler substances by chemical means. An element is composed of the smae type of
atoms

Question 12

Compound

Answer 12

compound is a substance made up of two or more different chemical elements combined

Question 13

Atomic number

Answer 13

The number of protons in a atom

Question 14

Molecule

Answer 14

a group of atoms bonded together

Question 15

Atomic mass

Answer 15

mass number = protons + neutrons. I

Question 17

How many protons, neutrons, and electrons in calcium

Answer 17

20

Question 18

How many protons, neutrons, and electrons in Gold

Answer 18

79p, 79e, 118n

Question 19

How many protons, neutrons, and electrons in Mercuryy

Answer 19

80 p, 80e , 121n

Question 20

How many protons, neutrons, and electrons in Plutonium

Answer 20

95p, 94e, 150n

Question 21

What’s the difference between an element and a molecule

Answer 21

An element is a pure substance made up of only one type of atom, while a molecule is a group of two or more atoms

Question 22

The metals are located where on the P.T

Answer 22

Left of the zig zag line

Question 23

Non metals are located where on the P.T

Answer 23

right of the zig zag line

Question 24

What elements are gases at room temp

Answer 24

Noble gasses, along with hydrogen, nitrogen, and oxygen

Question 25

What elements are most stable on the P.T

Answer 25

Noble gasses ( group 18)

Question 26

what elements are most reactive

Answer 26

The alikili metals

Question 27

The elements in one column all have the same

Answer 27

Valance electrons

Question 28

how is the P.T organized

Answer 28

rows and columns

Question 29

Steps of scientific method in order

Answer 29

1-problem/purpose
2- research
3-hypothesis
4- experiment
5-analyze
6-conclusion
7- repeat