Composition of Matter

Question 1

Matter

Answer 1

Anything that occupies space and has mass

Question 2

Element

Answer 2

Made of a single kind of atom and cannot be broken down by a chemical means into simpler substances.

Question 3

Atoms

Answer 3

Smallest unit of matter and made up of protons, neutrons, and electrons

Question 4

Nucleus

Answer 4

Protons and neutrons make up the nucleus of the atom

Question 5

Electrons

Answer 5

Electrons move about the nucleus in orbitals

Question 6

Isotopes

Answer 6

Atoms of the same element that have different numbers of neutrons are called isotopes

Question 7

Compound

Answer 7

Consist of atoms of two or more elements that are joined by chemical bonds in a fixed proportion

Question 8

Covalent Bonds

Answer 8

A covalent bond is formed when two atoms share electrons

Question 9

Ionic bonds

Answer 9

Formed when one atom gives up an electron to another. The positive ion is then attracted to the negative ion to form the ionic bond

Question 10

Ionic bonding

Answer 10

A element loses an electron; both atoms are now stable but carry a charge and become ions; the ions are attracted to one another and form ionic bonds.

Question 11

States of Matter

Answer 11

Addition of energy to a substance can cause its state to change from solid to liquid and a liquid to a gas