Chemical reactions Flashcards Preview

S2 Science > Chemical reactions > Flashcards

Flashcards in Chemical reactions Deck (26)
Loading flashcards...
1

What is an element?

A substance containing only 1 type of atom

2

What is a compound?

2 or more elements chemically combined

3

What is a reactant?

A substance that takes part in a chemical reaction

4

What is a product?

A substance produced in a chemical reaction

5

What does the prefix mono mean?

1

6

What does the prefix di mean?

2

7

What does the prefix tri mean?

3

8

What does the prefix tetra mean?

4

9

On which side of a chemical equation are reactants found?

The Left Hand Side (LHS)

10

On which side of a chemical equation are products found?

The Right Hand Side (RHS

11

What does the "+" sign mean on the LHS of an equation?

Reacts with

12

What does the arrow mean in a chemical equation?

"To produce"

 

13

What does the + sign on the RHS of a word equation mean?

And

14

What is ALWAYS produced in a chemical reaction?

A new substance

15

What are the 5 signs of a chemical reaction?

Gas given off

Colour change

Smell

Energy change  (temperature, light)

Solid formed

16

How can we detect energy changes in a reaction?

Using a thermometer to detect change in temp

Feeling heat given off by a reaction

Hearing sound energy

Seeing Light energy

17

What separation technique do we if there is an insoluble substance in water?

Filtration

18

Name the part shown

19

Name the part shown

Filter paper

20

Name the part shown

Erlenmeyer (Conical ) Flask

21

Name the part shown

Filtrate

22

Name the part shown

Residue

23

What is an "ore"?

A naturally occurring metal compound

24

What is meant by "extraction"?

Obtaining a metal from its ore

25

What 3 methods are used to extract metels fom their ores?

  1. Heating
  2. Heating with Carbon
  3. Electrolysis

26

What is meant by "electrolysis"?

Breaking apart a compound using electricity