BJU Biology Chapter 2

What distinguishes organic compounds from inorganic compounds?

Which of the following is not a smaller part of an atom?

bonds between atoms _________.

_____________ is the motion caused by the collision between particles.

Running a tree branch through a wood chipper.

A key element for living things and one that can form up to four chemical bonds is __________.

Crumpling a piece of paper

The organic compounds all contain the element ________.

a(n) ___________ is a pure substance made of two or more chemically combined elements.

what are the four main kinds of organic molecules found in living things?

Covalent compounds form chemical bonds by sharing __________.

Atoms are made of smaller particles including negatively charged __________.

An ion is ___________.

a carton of milk turning sour

What three elements are found in every carbohydrate?

gasoline powering a car's engine

the speed at which particles move is associated with __________.

Proteins are organic polymers consisting of chains of ____________.

A substance that decreases the activity of an enzyme is a(n) __________.

the outer most electrons in an atom are called ________.

a(n) _________ is a substance that produces hydrogen ions in solution.

in a solution, the substance that does the dissolving is called the ____________.

temperature is a measurement of __________.

A pure substance made of only one kind of atom is ________________.

The main purpose of carbohydrates for living things is for _____________.

The physical stuff that makes up everything in the universe is known as ___________.

_________ is a substance that produces hydroxide ions in solution.

Atoms are __________.

ice on a pond melting

__________ bonds occur between oppositely charged ions.

Chemistry is ___________.

which of the following is not a molecule?

Lipids include _________.

The smallest part of a covalent bond is a(n) ___________.

A(n) __________ is the smallest individual part of an element.

An atom is classified by the number of _________ in its nucleus.

seawater is a solution of water, minerals, and gases. In a seawater solution the solute is ___.

Covalent compounds form when atoms ________ electrons.

a compound held together by opposite electrical charges is a(n) ______________ compound.

Which of the following is true about enzymes?

A chemical _____________ shows the reactants and the products involved in a reaction.

a(n) _____________ is a pure substance made of only one kind of atom.

___________ is the tendency of energy to spread out.