Molecules Moles and Chemical Equations

Question 1

What’s a Molecule?

Answer 1

Group of 2 or more atoms held together by chemical bonds

Question 2

what do the following represent at the end of chemicals in an equation
(s) , (aq) , (l) , (g)

Answer 2

solid
aqueous
liquid
gas

all phases of the chemicals

Question 3

What the law of conservation of matter

Answer 3

Matter is neither created or destroyed

Question 4

Whats a solvent

Answer 4

Medium which the solid is dissolved

Question 5

Whats a solute

Answer 5

the dissolved solid

Question 6

What is solubility

Answer 6

: maximum amount of solute that can be dissolved in the solution

Question 7

Explain why gasses and liquids react more readily than solids

Answer 7

For a reaction to take place, there must be contact between particles

Liquid and gasses phases are mobile and the solid phases have a lack of contact

Question 8

How can a solid react more readily?

Answer 8

if it is dissolved in a medium such as water to form an aqueous solution

Question 9

What is mol

Answer 9

6.022X10^23 particles of an element or compound

Number of atoms molecules or ions found in exactly 12g of carbon 12

Question 10

A Typical UK home uses 775kg of Natural Methane Gas (CH4) to power a gas boiler.

Determine the annual amount of CO2 released in kg

Answer 10

Question 11

The main ingredient in vinegar is acetic acid (CH3CO2H) , which normally represents 5% by weight of the total solution.
Determine the Molarity of acetic acid in a typical vinegear

Answer 11

Question 12

What is Molar Mass?

Answer 12

Mass of 1 mole of any element, ion or compound

Question 14

Answer 14

Question 15

Answer 15

Question 16

Answer 16