Biology 2A and 2B

_____ is formed when two atoms interact and exchanged

oppositely charged ions attract to form an ________

the dispersion of substances through Brownian Motion alone

special catalyst in living things

what is a uniform mixture

a ____ is a substance that dissolves in water to from hydroxide ions

1.) ____ means moving in some way and 2.) _____ means the potential to move

extra ____ produce a negative ion, or also known as an anion

an ______ is a substance used to reduce a catalyst's undesirable effects

the study of matter and the changes it experiences

What are the basic building blocks of matter

an ____ is a substance that dissolves in water to form hydrogen ions

what are pure substances made of only one kind of atom (Example: chlorine gas, copper nuggets, hunks of yellow sulfur)

what is formed when two atoms share electrons

changes that don't change matter's identity are called ______

what is the smallest part of an ionic compound

define solvent

when matter changes in a way that completely changes its identity is called _____ changes

what has a positive charge, which happens when there are extra protons

living things depend on energy's tendency to disperse

what is the smallest part of a covalent compound

define energy

1.) _____ the reactants have less energy in the products 2.) _____ produces more energy in the products

what is the concentration of a solution

what is stored chemical energy that holds two atoms together

the process by which one substance is broken into smaller pieces, usually by ions, by substance is called _____

neutrally charged particles

the starting materials for the chemical reactions

oppositely charged ____'s and ____'s is the force that holds atoms together (two answers)

the ____ is the end substance(s) after a chemical reaction

what is a pure substance made of two or more elements chemically combined

what is the physical stuff that makes up the universe

chemists pack all the answers to questions into an equation called a ______

positively charged particles

what is the conservation of energy

what is a substances that doesn't require as much energy to jump start

the erratic random movement of microscopic particles in a fluid, as a result of continuous bombardment from molecules

the measure of the speed at which particles move is the _______ of a substance or organism. relative hotness or coldness