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Worksheets7C3 Formative Quiz 2021-2022
Total questions: 15
Worksheet time: 8mins
Complete the word equation below:
Acid + alkali --> ............... + water
water
salt
gold
metal
Complete the following reaction:
Hydrochloric acid + magnesium hydroxide -->
Magnesium chloride + water
Magnesium + water
Magnesium chloride + hydrogen
Magnesium chloride + water + carbon dioxide
Toothpaste contain .................. that neutralize acid formed by bacteria.
alkali
acid
antacid
slaked lime
Carbon dioxide ( CO2 ) forms when coal burns in the presence of oxygen. Which of these is the BEST evidence that a chemical reaction occurs when coal burns?
The shape of the coal changes
Oxygen is present
A new substance is produced
Coal is made up of more than one element
Burning wood
physical change
chemical change
Thermal decomposition
Neutralization reaction
Melting ice
physical change
chemical change
Neither of the above
chemical reaction
What is the test for the presence of carbon dioxide?
Limewater turns from clear to milky
Limewater turns from milky to clear
A lit splint goes out with a squeaky pop
A glowing splint relights
.............................. + sodium hydroxide --> sodium chloride + water
Nitric acid
Sulphuric acid
Hydrochloric acid
Ethanoic acid
When an acid and base has been neutralized the pH will be?
1
4
7
10
This lab student is wearing her googles and an apron. But what is she doing wrong?
Pointing the test tube toward her while heating it.
She actually is doing everything correctly.
Her loose hair is too close to the fire.
Not paying attention
The process by which one or more substances change to produce one or more different substances
Chemical Process
Reactant
Chemical Reaction
Physical change
Which of the following is not a chemical change?
Photosynthesis
Digestion of food
Respiration in plants and animals
Breaking of glass
Reactants are found on the _______________ side of the arrow in a chemical equation.
Right
Left
either
end
metal + acid -->
salt + hydrogen
salt + water
salt + carbon dioxide
Salt + Oxygen
Flammable materials, like alcohol, should never be dispensed or used near
an open door
an open flame
another student
a sink
