120 Questions
What is the product of the reaction between a non-metal oxide and water?
Acidic solution with pH < 7
What is the general pH range of metal oxide solutions in water?
pH > 7
What is formed when a metal oxide reacts with an acid?
A salt and water
What is the purpose of universal indicator paper in the experiment?
To measure the pH of the solution
What type of reaction occurs when a metal oxide reacts with an acid?
Acid-base reaction
What is the general formula for metal hydroxides formed from Group 1 metals?
MOH
What is the reaction between a non-metal oxide and water called?
Formation of acid rain
What is the purpose of identifying the reactants in writing a reaction equation?
To start writing the equation
What is the formula for magnesium oxide?
MgO
What is the general formula for metal carbonates formed from Group 1 metals?
M₂CO₃
What is the pH range of strong acids?
pH 1-3
What is the universal indicator used for?
To measure the pH of a solution
What is the pH of a neutral solution?
pH = 7
What happens when an acid and a base react?
They neutralise each other
What is the general equation for a neutralisation reaction?
acid + base → salt + water
What is the product of a neutralisation reaction?
Typically water and a salt
What should be done when handling laboratory acids?
Handle them with care
What is formed when non-metal oxides dissolve in water?
An acid
What is the pH range of weak acids?
pH 4-6
What is the color of the universal indicator when vinegar is added?
Red or orange
What is the general word equation for the reaction of an acid with a metal hydroxide?
acid + metal hydroxide → salt + water
What is the product of the reaction between hydrochloric acid and sodium hydroxide?
sodium chloride
What is the purpose of the universal indicator paper in the experiment?
to measure the pH of the reaction
What is formed when calcium carbonate reacts with hydrochloric acid?
carbon dioxide
What is the general equation for the reaction of an acid with a metal carbonate?
acid + metal carbonate → salt + water + carbon dioxide
What is the purpose of the steps to write reaction equations?
all of the above
What is the reactant in the reaction between hydrochloric acid and potassium hydroxide?
potassium hydroxide
What is the product of the reaction between sulfuric acid and potassium hydroxide?
potassium sulfate
What is the role of the metal hydroxide in the reaction?
to react with the acid
What is the general equation for the reaction of an acid with a metal?
acid + metal → salt + water
What is the main component of shells of marine organisms?
Calcium carbonate
What is the process of adding lime to soil to increase its pH and provide a source of calcium?
Liming
What is the common use of calcium carbonate in swimming pools?
To adjust the pH levels
What is the form of calcium carbonate used in agriculture to neutralize acidic soil?
Agricultural lime
What is the name of the caves in South Africa that contain limestone formations?
Cango Caves
What is the nutritional source of calcium provided by dark green leafy vegetables?
Calcium
What is the common use of calcium carbonate in construction?
As a building material
What is the form of calcium carbonate used in adhesives and paints?
Calcium carbonate
What is the reason why calcium carbonate is added to swimming pools?
To make the water more basic
What is the purpose of calcium carbonate in agriculture?
To provide a source of calcium
What is the result of the reaction between a metal oxide and an acid?
A salt and water are formed.
What type of solutions are formed when metal oxides dissolve in water?
Basic solutions
What is the purpose of using universal indicator paper in an experiment?
To measure the pH of a solution
What is the general pattern of the reaction between a metal oxide and an acid?
Exchange reaction
What is the result of the reaction between a non-metal oxide and water?
An acidic solution is formed
What is the general word equation for the reaction of an acid with a metal oxide?
Acid + metal oxide → salt + water
What is the purpose of balancing a chemical equation?
To ensure the number of atoms of each element is the same on both sides of the equation
What is the general characteristic of metal hydroxides?
They are basic and form solutions with pH values above 7
What is the role of the metal oxide in the reaction with an acid?
It acts as a base
What is the general formula for metal oxides formed from Group 2 metals?
MO
What is the pH of a solution that is strongly basic?
Greater than 7
What is the result of mixing a strong acid and a strong base?
A neutral solution
Which of the following acids is commonly used in a laboratory?
All of the above
What is the color of the universal indicator when a strong base is added?
Blue or green
What is formed when a non-metal oxide dissolves in water?
An acid
What is the pH range of a weak acid?
4-6
What is the result of a neutralisation reaction?
A neutral solution and a salt
What is the purpose of using a universal indicator?
To measure the pH of a solution
What is the general equation for a neutralisation reaction?
acid + base → salt + water
Why is it important to handle laboratory acids with care?
Because they are corrosive
What is the primary component of the shells of marine organisms?
Calcium carbonate
What is the purpose of adding calcium carbonate to swimming pools?
To increase the pH level
What is the term for the process of adding lime to soil to increase its pH?
Liming
What is the common use of calcium carbonate in construction?
As a building material
What is the form of calcium carbonate used in agriculture to neutralize acidic soil?
Agricultural lime
What is the nutritional source of calcium provided by dark green leafy vegetables?
Calcium carbonate
What is the name of the caves in South Africa that contain limestone formations?
Cango Caves
What is the common use of calcium carbonate in adhesives and paints?
As a filler
What is the primary source of calcium in bird eggshells?
Calcium carbonate
What is the role of calcium carbonate in the exoskeletons of crustaceans?
Provides structural support
What is the general equation for the reaction of an acid with a metal hydroxide?
acid + metal hydroxide → salt + water
What is the purpose of the steps to write reaction equations?
To identify the reactants and predict the products
What is the reactant in the reaction between hydrochloric acid and potassium hydroxide?
Hydrochloric acid
What is formed when calcium carbonate reacts with hydrochloric acid?
Calcium chloride, water, and carbon dioxide
What is the role of the metal hydroxide in the reaction?
To react with the acid to form a salt and water
What is the product of the reaction between sulfuric acid and potassium hydroxide?
Potassium sulfate and water
What is the general equation for the reaction of an acid with a metal carbonate?
acid + metal carbonate → salt + water + carbon dioxide
What is the purpose of identifying the reactants in writing a reaction equation?
To identify the reactants and predict the products
What is formed when an acid reacts with a metal carbonate?
Salt, water, and carbon dioxide
What is the purpose of balancing the chemical equation?
To ensure the number of atoms of each element is the same on both sides of the equation
What is the primary purpose of using a universal indicator in an experiment involving acids and bases?
To identify the pH of the solution
Which of the following is a characteristic of a strong base?
pH > 7
What is the result of mixing a strong acid with a weak base?
A acidic solution is formed
What is the purpose of handling laboratory acids with care?
They are highly corrosive
What is the product of the reaction between a non-metal oxide and water?
An acid and water
Which of the following is an example of a weak acid?
Carbonic acid (H₂CO₃)
What is the general equation for the reaction between an acid and a base?
Acid + Base → Salt + Water
What is the pH of a solution that is midway between a strong acid and a strong base?
pH 7
What is the purpose of using a pH scale?
To measure the acidity or basicity of a solution
What is the result of mixing a weak acid with a strong base?
A basic solution is formed
What is the difference between the reaction of an acid with a metal hydroxide and the reaction of an acid with a metal carbonate?
The reaction with a metal hydroxide produces a gas, while the reaction with a metal carbonate does not
What is the purpose of the steps to write reaction equations?
To ensure the correct sequence of reactants and products
What is the role of the metal hydroxide in the reaction with an acid?
It acts as a base
What is the general equation for the reaction of an acid with a metal carbonate?
acid + metal carbonate → salt + water + carbon dioxide
What is the product of the reaction between hydrochloric acid and calcium carbonate?
calcium chloride and carbon dioxide
What is the difference between a metal hydroxide and a metal carbonate?
A metal hydroxide reacts with acids to form a salt and water, while a metal carbonate reacts with acids to form a salt, water, and carbon dioxide
What is the purpose of using a universal indicator in an experiment?
To measure the pH of a solution
What is the general word equation for the reaction of an acid with a metal hydroxide?
acid + metal hydroxide → salt + water
What is the role of the acid in the reaction with a metal hydroxide?
It acts as an acid
What is the general characteristic of metal hydroxides?
They are basic
What is the reason for the difference in pH values of metal oxides and non-metal oxides when they dissolve in water?
The difference in electronegativity between metal and non-metal atoms
What is the characteristic that metal oxides and metal hydroxides have in common when they dissolve in water?
They are both basic and form solutions with pH values above 7
What is the purpose of the universal indicator paper in the experiment involving the reaction of magnesium oxide with hydrochloric acid?
To measure the pH of the solution during the reaction
What is the primary source of calcium carbonate in the shells of marine organisms?
Biological precipitation from the organism's body
What is the general pattern of the reaction between a metal oxide and an acid?
Acid + metal oxide → salt + water
What is the main reason why calcium carbonate is added to swimming pools?
To reduce the acidity of the pool
What is the primary application of calcium carbonate in agriculture?
Soil pH adjustment
What is the characteristic of metal hydroxides that makes them basic?
They contain a hydroxide anion (OH⁻)
What is the purpose of identifying the reactants in writing a reaction equation?
To predict the products of the reaction
What is the primary source of calcium in dark green leafy vegetables?
Calcium carbonate
What is the general word equation for the reaction of an acid with a metal carbonate?
Acid + metal carbonate → salt + water + carbon dioxide
What is the primary component of the exoskeletons of crustaceans?
Calcium carbonate
What is the geological process that forms limestone formations?
Precipitation of calcium carbonate
What is the result of the reaction between a metal oxide and an acid?
The formation of a salt and water
What is the primary use of calcium carbonate in construction?
Cement production
What is the purpose of balancing a chemical equation?
To ensure the number of atoms of each element is the same on both sides of the equation
What is the characteristic of metal oxides that makes them basic?
They have a high pH value when dissolved in water
What is the term for the process of adding calcium carbonate to soil to increase its pH?
Liming
What is the primary reason why calcium carbonate is used in adhesives and paints?
To adjust their pH
What is the term for the caves in South Africa that contain limestone formations?
Cango Caves
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