ISOTOPES

Question 1

Positively Charge

Answer 1

Proton

Question 2

Negatively charge

Answer 2

Electron

Question 3

Neutral

Answer 3

Neutron

Question 4

What are the three basic laws of matter?

Answer 4

1. Law of Conservation of Mass
2. Law of Definite Proportions
3. Law of Multiple Proportions

Question 5

A chemical reaction mass is neither created nor destroyed but can be transformed from one form to another

Answer 5

Law of Conservation of Mass

Question 6

The mass of the products equals the mass of the reactants

Answer 6

Law of Conservation of Mass

Question 7

Law of Conservation of Mass is outlined by

Answer 7

Antoine Laurent Lavoisier

Question 8

A chemical compound always contains exactly the same proportion of elements by mass

Answer 8

Law of Definite Proportions

Question 9

Law of Definite Proportions was established by

Answer 9

Joseph Proust

Question 10

States that the mass of one element that can combine with a fixed mass of another element are in a ratio of small whole numbers

Answer 10

Law of Multiple Proportions

Question 11

When elements combine, and the ratios of the elements are not the same (CO to CO2 , ratio: 1:2)

Answer 11

Law of Multiple Proportions

Question 12

Are atoms of the same element but have different mass numbers

Answer 12

Isotopes

Question 13

Symbol A is

Answer 13

Mass Number

Question 14

Symbol Z is

Answer 14

Atomic Number

Question 15

Symbol X is

Answer 15

symbol of the Element

Question 16

It is equal to the number of protons + neutrons

Answer 16

Mass Number

Question 17

It is Equal to the number of Protons

Answer 17

Atomic Number

Question 18

How can we name an Isotope?

Answer 18

By writing the name of the element followed by a hyphen and the mass number (Sodium-11)

Question 19

How to solve for Atomic Mass

Answer 19

Z x %
where in % must be in decimal form

Question 20

How to solve for the Average Atomic Mass

Answer 20

use the formula Z x % then Add all these amounts together