Chapter 7.1 Chemistry

There are 5 common amino acids.

A substance gains an electron, and oxygen is released in the process of __________.

Matter is anything that occupies space.

2 of more compounds blended physically is:

A biologist is a scientist who studies matter, its properties and changes.

This form of matter has a definite weight, volume, and shape.

Anything that occupies space is known as ____.

The study of chemical reactions, such as growth, reproduction & respiration, that occur within a living organism is_____

Protons have a _________electric charge.

The smallest complete units of an element are called:

The part of the atom that has no electrical charge is the:

The unifying concept used to organize elements is:

Chemistry is the scientific study of matter.

Emulsifiers are binding substances used to slow down the destruction of the product.

The chemical behavior of an atom depends on the:

On the pH scale, 3 would be considered

Human skin is a solid.

A mixture of 2 or more compounds in which each component is evenly dispersed.

What are the basic materials that the body uses to renew itself?

A mixture of sebum and sweat combined with lipids to form a protective barrier for the skin is:

When positive and negative ions join, they are held together by:

Atoms are basic units of matter that cannot be broken down into smaller substances by any chemical reaction.

A substance that is compatible with both water and oil.

A simple unit of a carbohydrate is a:

A ______ is matter with definite weight, but indefinite volume and shape.

The science that deal with all matter that is now living or once alive at one time is:

Carbohydrates are used by the body to store energy and play a key role in ______________.

Electrons have a __________electrical charge.

The condition under which a solute will no longer dissolve evenly in the solvent is the:

Atoms are basic units of matter that cannot be broken down into simpler substances by any chemical reaction.

The term ________ is used for describing the base.

A pH of 6 is 100 times more acidic than neutral 7; and 6 is 100 times less acidic than 5.

The ability to do work to accomplish some change is called:

The air we breath is matter.

Lotions are liquids, they have definite weight and volume, but no shape.

A free electron is the name given to an electron in the outermost orbit that is easily moved from its orbit.