Chemical Reactions

Question 1

What occurs when elements or compounds have their bonds re-arranged

Answer 1

Chemical Reaction

Question 2

How many types of chemical reactions are there

Answer 2

Four

Question 3

1st type of chemical reactions something new is made from existing compounds or elements. A+B —–>AB

Answer 3

Synthesis

Question 4

2nd type of chemical reaction, an existing compound is broken down into its component parts. Ab—-A+b

Answer 4

Decomposition

Question 5

3rd chemical reaction, one part of an existing compound is replaced by something else Ab + c ——>Ac +b

Answer 5

Single replacement action

Question 6

4th chemical reaction, the parts of two existing compounds switch partners
Ab +CD —->AD + CB

Answer 6

Double replacement

Question 7

A mathematical representation of a chemical reaction

Answer 7

Chemical equation

Question 8

Chemical equation has two parts, what are they

Answer 8

1. Reagents are what exists before the reaction takes place

2. Products are what exists after the reaction takes place

Question 9

The law of conservation of _____________________ can neither be created nor destroyed. It can only be ____________________.

Answer 9

Matter, transferred

Question 10

Give an example of the law of conservation of matter

Answer 10

6 people in a row boat can change seats but nobody disappears or appears

Question 11

True or False . We can and must balance any chemical equation

Answer 11

True