Test 1

Question 1

Atoms

Answer 1

Smallest unit of matter that still retains chemical properties of an element

Question 2

Compounds

Answer 2

When atoms combine with other atoms. Chemical bond.

Question 3

Covalent bonds

Answer 3

Two atoms share electrons

Question 4

Ionic bonds

Answer 4

Electrons are fully transferred between two atoms

Question 5

Ion

Answer 5

When the total number of electrons is not equal to the total number of protons

Question 6

Cation

Answer 6

A type of ion with a positive charge

Question 7

Anion

Answer 7

A type of ion with a negative charge

Question 8

Ionic compound

Answer 8

Metal + NonMetal

Question 9

Molecular compound

Answer 9

Nonmetal + Nonmetal

Question 10

Chemical reaction

Answer 10

Atoms of one or more substances are rearranged to for a different substance.

Question 11

Physical property

Answer 11

Characteristic of a material that you can observe without changing the substance

Question 12

Chemical property

Answer 12

characteristic of a substance that indicates whether it can undergo a certain chemical change

Question 13

Physical change

Answer 13

a change in size, shape, or state of matter, substance DOES NOT change identity when it undergoes a physical change

Question 14

Chemical change

Answer 14

a change in one or more substance to another substace

Question 15

Law of conservation mass

Answer 15

Mass of all substances present before a chemical change equals the mass after the chemical change

Question 16

Element

Answer 16

matter that is composed of one type of atom

Question 17

Electron Cloud

Answer 17

model which shows electrons travelling in specific energy levels around a nucleus; electrons closest to nucleus have low energy, electrons farther away have high energy.