Law of Conservation of mass

How does a catalyst work in speeding up a reaction?

• By lowering the activation energy or reaction

• by giving them more energy

• by making them more available

The minimum amount of energy needed for colliding particles to react is called the

• Chemical Energy

• Kinetic Energy

• Activation Energy

• Potential Energy

A substance that increases the rate of a reaction without being used up during the reaction is called a

• catalyst

• product

• reactant

• solute

Catalysts permit reactions to proceed along a ___________energy path.

• lower
• higher

Which of the following is an intramolecular force?

• hydrogen bonding

• polar covalent bonding

• London dispersion forces

• dipole-dipole interaction

Which intermolecular force requires hydrogen and one of the following: nitrogen, oxygen, fluorine?

• Dipole-dipole

• Hydrogen bonding

• London dispersion forces

If fluorine is stronger then carbon, what charge will the fluorine receive?

• negative
• slight negative
• positive
• slight positive

Intermolecular forces are the forces

• within molecules
• between molecules

Intramolecular forces are the forces

• within molecules

• between molecules

_________ are the substances that are produced in a chemical reaction.

• Reactants

• Producer

• Reaction

• Product