Chemistry/Biology Review

Electrolytes are substances that

• cannot conduct electricity in solution

• conduct electricity when dissolved in water

• form covalent bonds with water

• are NOT charged particles

When ionic compounds dissolve in water, their ions

• lose their charge

• dissociate or separate from one another

• cling tightly together

• get lost in solvent

Intermolecular forces are weak electrostatic attractions that exist between

• two molecules

• two atoms

• two protons

• two electrons

Covalent bonds form when

• molecules become ionized

• electrons are shared between 2 atoms

• atome nuclei fuse

• neutrons are transferred from one atom to another

all the synthesis reactions in the body are called

• catabolism

• dissociation

• anabolism

• hydrolysis

Heat energy is

• energy that flows between objects with different temperatures

• energy that moves in waves

• movement of ions or electrons

• stored energy that could do work but is not doing so

The conversion between different states of energy (ex. potential to kinetic)

• is not 100% efficient

• is 100% efficient

• typically generates heat

• is not 100% efficient AND typically generates heat

A substance that will increase the rate of a chemical reaction without being permanently changed is called

• oxidator

• reducing agent

• catalyst

• solute

For most chemical reactions an increase in temperature will cause the reaction rate to

• remain unchanged

• increase

• decrease

• neither increases nor decreases

The minimum amount of energy that reactants must have to start a chemical reaction is called __ energy

• electromagnetic

• activation

• mechanical

• kinetic