Fundemental Ideas Of Chemistry

Question 1

What is temperature a measure of?

Answer 1

The average kinetic energy of the molecules in a substance

Question 2

How do you calculate te mr?

Answer 2

Time sthe number of atoms of each element with the Ar of each element. Add the totals together and pit it in g/mol.

Question 3

Balance Mg+02 —> Mg0

Answer 3

2Mg+ 02—> 2Mg0

Question 4

What does moles equal?

Answer 4

Mass divided by Mr

Question 5

How is mass calculated?

Answer 5

MolesxMr

Question 6

What is avrogado’s constant?

Answer 6

The number of atoms, molecules or ions in one mole of a given substance (6.02x10 23)

Question 7

What are cgemical amounts measured in?

Answer 7

Moles

Question 8

How do you gofrom solid to liquid

Answer 8

Melting

Question 9

How do you ho from liquid to gas

Answer 9

Boiling

Question 10

How do you go feom gas to liquid

Answer 10

Condensation

Question 11

How do you go from liquid to solid

Answer 11

Freezing

Question 12

How do you go from gas to solid

Answer 12

Deposition

Question 13

How do you go from solid to gas

Answer 13

Sublimation

Question 14

What are the four states of matter

Answer 14

Solid liquid gas aqueous

Question 15

How do you calculate percentage by mass

Answer 15

Mass of element/mr of substance x100

Question 16

How do you find the number of particles

Answer 16

Moles x avogadro constant(6.02x10 23)

Question 17

Where is the mass number on an element in the periodic table

Answer 17

Above

Question 18

What are the calculations you do to find how much mass of one of the products will be created from the given mass of one of the reactants

Answer 18

First balance the equation
Then do the mass of the reactant/the mr
This number is the number of moles so times this by however much you need to maintain the ratio of the balancing
Times this by the mr