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WorksheetsChemical reactions and its effects
Total questions: 15
Worksheet time: 30mins
the pollutant that cause headache and may cause death
CO
CO2
SO2
SO3
The main reason of the green house effect is :
Increase in carbon monoxide conc. In atmosphere
Increase in carbon dioxide conc. in the atmosphere
Increase in the sulfer dioxide conc. In the atmosphere
Increase in the acidic gaseous in the atmosphere
Acid rain has a negative effect on
Economy
Environment
Health
All choices
Acid and base react to produce salt and water which is called
Element with element reaction
Element with compound reaction
Neutralization reaction
Combustion reaction
When acid dissolves in water it release.....
H ion
H gas
OH ion
He
Bases make the red litmus paper
Still red
Change to orange
Change to blue
Change to green
.......... are a good comductors to heat and electricity
Non metals
Metalloides
Metals
Gases
Lossing the outershell electrons in metals produce
Negative ion
Positive ion
Neutral ion
None
All elements lose or gain electrons to reach....
Octet state
Noble gas cofiguration
Stable state
All choices are correct
Balanced chemical equation represent the condition of the reaction by adding integer before the reactants and products
True
False
the type of chemical reaction
element with element
compound with compound
compound with element
none
balance :
1 , 3 , 2
2 , 2 ,3
3, 2 , 2
1 , 2 , 2
balance:
2 , 3 , 4 , 3
3 , 4 , 5 , 2
3 , 3 , 4 , 3
2 , 3 , 3 , 2
balance:
2 , 3 , 2
4 , 3 , 2
2 , 4 , 3
4 , 3 , 3
balance:
1 , 9 , 6 , 6
2 , 9 , 6 , 3
2 , 9 , 5 , 5
3 , 9 , 6 , 6
