Enviro Sci - Ch 3.1 - Matter and the Environment

A mixture in which all the ingredients are evenly distributed is called a _.

Solution

The acidity or alkalinity of a solution is described by _.

pH

_ are the basic units of matter.

Atoms

_ are polymers that consist of atoms of carbon, hydrogen, and oxygen.

Carbohydrates

_ are a chemically diverse group of macromolecules that are classified together because they do not dissolve in water.

Lipids

Proteins, nucleic acids,carbohydrates, and lipids are called _ because of their large size.

Macromolecules

All material in the universe that has mass and occupies space is called matter.

Matter

A _ is a combination of two or more atoms of the same type or of different types of joined by convalent bonds.

Molecule

_ _ are macromolecules that direct protein production.

Nucleic acids

Every atom has a _, or central core, containing particles called protons and neutrons.

Nucleus

_ are polymers that serve many functions in organisms.

Proteins

A substance composed of atoms of two or more different elements is called a _.

Compound

An _ is a chemical substance with a given set of properties that cannot be broken down into substances with other properties.

Element

_ are organic compounds containing only hydrogen and carbon.

Hydrocarbons