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Chemistry Concepts Review Quiz

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Questions and Answers

What was the element created by Emilio Serge and Carlo Perrier in 1937?

Technetium (correct)

Molybdenum

Hydrogen

Deuterons

What is the definition of activation energy?

The measure of the hotness or coldness of a substance

The measure of the change in the concentration of the reactants or products

The ability of water molecules to move against gravity

The minimum amount of energy needed for colliding particles to react (correct)

What is the definition of boiling?

The excessive consumption of carbohydrates which is converted into polysaccharide that is stored in the liver and in the muscles

The ability of an atom in a molecule to attract shared electrons

The strongest among the intermolecular forces

When the vapour pressure of a liquid becomes equal to the atmospheric pressure (correct)

What is the definition of capillary action?

The ability of water molecules to move against gravity Signup and view all the answers

What is the definition of an enzyme?

The catalyst in the human body Signup and view all the answers

What is the definition of glycogen?

The excessive consumption of carbohydrates which is converted into polysaccharide that is stored in the liver and in the muscles Signup and view all the answers

What is the measure of how fast or slow a chemical reaction happens?

Rate of reaction Signup and view all the answers

What is the substance formed as a result of a chemical reaction called?

Product Signup and view all the answers

When particles in a substance collide and have enough energy, what can occur?

A chemical reaction Signup and view all the answers

How can the rate of a chemical reaction be slowed down?

Using iced water Signup and view all the answers

When do tetrahedral molecules occur?

When there are four and no lone pairs in the molecule’s central atom Signup and view all the answers

What is the range of electronegativity difference for a polar covalent bond?

0.5 to 1.6 Signup and view all the answers

Which of the following is NOT a type of lipid?

Carbohydrate Signup and view all the answers

Which of the following is NOT an example of an intermolecular force?

Chemical reaction Signup and view all the answers

What is the effect of a change in particle size on the rate of a chemical reaction?

It has no effect on the rate Signup and view all the answers

In the main sequence star, what is produced from the fusion of Hydrogen to Helium?

Carbon Signup and view all the answers

What is the primary function of myoglobin in muscles?

To store oxygen Signup and view all the answers