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100
What is the pH range of acids?
0-6
100
What will be the color of litmus paper if it's placed into base?
Blue
100
Define neutralization
A reaction where acid and base react to form salt and water
100
What is the name of the element that doesn't react with acid
gold
100
Name 3 metals
Iron 

Zinc

Copper

200
What is pH scale?

it’s a scale to measure the strength of acid and bases. Starts from 0 to 14.


200
What is the formula of carbonate?

CO3

200
What is the name of the gas produced when acid react with metals?

Hydrogen Gas(H2)

200
What is the name of the gas produced when base react with metals?
No reaction
200
Mention 3 examples of acids
Any correct 3
300
What is the name of the stomach acid?
HCl, Hydrochloric acid


300
What will happen to a litmus paper if it's placed in salt and water solution?
Nothing will change
300
What is the pH range of the base?
8-14
300
What is an example of indicator?
Litmus paper
300
Baking soda is example of  ___________
base
400
Mention the 4 properties of acids
1-Sour taste

2- React with metals

3- React with carbonates

4-Change litmus paper to red

400
What is the name of the battery's acid?
Sulfuric acid
400
Define indicator
A substance that changes color when it's in contact with acid or base.
400

Is the following compound acid or base and why? 

HCO3

Acid because it include Hydrogen
400
Mention the 4 properties of bases:
1- Bitter taste

2- No reaction 

3- Slippery feeling 

4-Change the litmus paper to blue

500
True or false: a strong acid will not separate completely in water
False
500
What is the name of the ion that is produced from the acid in water, and the ion that is produced from base in water?

Acid in water: Hydrogen ion (H+)

Base in water: Hydroxide ion (OH-)

500

Which of the following are bases? (You can choose more than 1 answer)

NH3 

HCl 

HNO3

NaOH 

CaO

NH3

NaOH

CaO

500
What is the meaning of corrosive?
Wear away materials
500
Which one of these acids will have low concentration of hydrogen ions? Acid (A) with pH= 2, or Acid B= with pH=5.5?
Acid B