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Flashcards in Extra From Sam Learning Deck (15):
1

What is adding oxygen to a substance called?

Oxidation

Such as FeO

2

What is removing oxygen from a substance called?

Reduction

Such as O2 becoming O

3

What do you get if you add a strong acid to a weak alkali?

Weak acid

4

What do you get if you add a strong alkali to a weak acid?

A weak alkali

5

What do you get if you add a strong acid to a strong alkali?

A neutral solution

6

What colour is a strong alkali on the universal indicator?

Purple

7

What colour is a weak alkali on the universal indicator?

Light blue

8

What colour is a weak acid on a universal indicator?

Yellow

9

What colour is a strong acid on a universal indicator?

Red

10

What is the symbol for gold?

Au

11

What is oxidised iron called in layman's terms?

Iron ore

12

What colour is a neutral solution on a universal indicator?

Green

13

In a chemical reaction what stays the same?

Total mass

14

Is the pH scale linear or logarithmic?

Logarithmic

So a pH of 5 is 10 times more acid than 6

15

Universal indicator is made from the purple pigment of what vegetable?

Red cabbage