Duplicate of Chemistry

Pure substances are made of only one type of:

What is it called when a substance loses an electron and oxygen is acquired?

Atoms that are the same form a(n):

Why is skin a solid?

A bond uniting two amino acid groups that create proteins are:

Protons have which type of electrical charge?

Electrons have which type of electrical charge?

Atoms have three main parts: protons, neutrons and:

When a substance gains an electron and oxygen is released, the process is called:

Carbon, oxygen, hydrogen and nitrogen form the basis of:

Two or more atoms joined together by a chemical bond is a(n):

Which of the following is NOT an example of a physical change?

Atoms that are different form a(n):

Why do unstable atoms seek other atoms with which they can share electrons?

When two molecules of the element oxygen have combined, it is called a(n):

The chemical symbol for carbon is:

The term used to identify anything that occupies space and has weight is called:

A simple unit of a carbohydrate is called:

What are the three major biochemical compound groups in the body?

All matter that is not and has never been alive ex: rocks, water and minerals falls within the study of

Skin comprises two solids, which are carbon and sulfur and three gases, which are hydrogen, nitrogen and:

Water freezing and becoming ice is an example of what type of change?

The primary materials the body uses to construct and renew itself is:

There are 118 known elements; those above which element are synthetic?

Water freezing and becoming ice is an example of a physical change.

All matter that is now living or was alive at one time, with carbon present, falls within the scientific division of:

Which of these biochemical compounds form components that fill the intercellular spaces in the skin?

When two hydrogen atoms combine with one oxygen atom, the result is a water molecule, which is a(n):

The atomic number of a particular element indicates:

Which of these elements is the most abundant in the earth's crust and second most abundant in the earth's atmosphere?

Atoms that are not missing any electrons in their outer shell and are considered electrically neutral are called:

What is the smallest complete unit of an element?

An anion is

Matter with definite weight and volume but no definite shape is called:

A solid is defined as:

The scientific study of matter and the physical and chemical changes of matter is known as:

What is the most common element in the universe?

Many products estheticians use are the result of chemically uniting two different elements, which is known as:

Basic substances that cannot be broken down into simpler substances are called:

The simplest atomic structure is:

What is created when amino acids join together in chains?

Neutrons have which type of electrical charge?

Matter with definite weight but indefinite volume and shape is called:

Which of the following items has/have definite weight and volume but no definite shape?

Which of the following conditions is an example of chemical change?

In the process of oxidation, a substance gains an electron, and oxygen is released.