Substance in the space surrounding the nucleus of an atom
What are electrons
100
Substance that speeds up a reaction
What is catalyst
100
When salt is dissolved in water, the water is the
What is the solvent
100
When one electron is "stolen" this bond forms
What is an ionic bond
100
A substance with a pH of 4 is called this
What is an acid
200
One molecule of oxygen and two molecules of hydrogen
What makes up water
200
Term used to get a reaction started
What is activation energy
200
Elements or compounds produced by a chemical reaction are known as this
What are products
200
Because of the uneven distribution of electrons between oxygen and hydrogen a water molecule is this
What is polar
200
I have a pH of greater than 7
What is a base
300
The most abundant compound in living things
What is water
300
when hydrogen and oxygen combine to form water, water would be this
What is the product
300
Help fight disease, control the rate of reactions and regulate the cell process, and forming bones and muscles are some of the jobs of this organic compound
What are proteins
300
Type of bonds made between two hydrogens
What are hydrogen bonds
300
An acid forms this in solution
What are H+ ions
400
The nucleus is made up of
What are protons and neutrons
400
Enzymes do this to chemical reactions
What is speed them up
400
organic compound that is the main source of energy for all living things
What are carbohydrates
400
The three types of covalent bonds
What are single, double and triple
400
A base forms this in solution
What are OH- ions
500
The three particles that make up an atom
What are the proton, neutron, and electron
500
Process that changes one set of chemicals into another set of chemicals
What is chemical reaction
500
The term for a substance formed by the combination of two or more elements in a definite proportion