the number of protons in the nucleus of an atom; determines the properties of an atom

the number of protons and neutrons in the nucleus of an atom

notation that shows the chemical symbol, atomic number (bottom number), and mass number (top number) for an isotope of an element

Vertical columns on a periodic table that have similar properties and tell the number of valence electrons

Horizontal rows, known as series, on the periodic table that have the same number of electron energy levels

Group 7A. Contains nonmetals, 7 valence electrons in it's outermost energy level. Very reactive

The elements in Group 8A of the periodic table. Nonreactive due to having a full valence shell of electrons (all 8).

Elements that are lustrous, malleable, ductile, reactive, solid at room temp, and good conductors. Found on the left side of the periodic table.

Elements that are poor conductors of heat and electric current, can exist in any state of matter (typically gas), solids exist as brittle crystals, and have a variety of colors. Found on the right side of the periodic table.

Elements that share some properties with metals and some properties with non-metals, are semi-conductors, and are used in computers, cell phones, and other digital devices.

A change in a substance that does not involve a change in the identity of the substance

A change in matter that produces one or more new substances

Burning, rusting, digesting, decomposing

Changes of state or phase, cutting, folding, forming sawdust

A measure of the force of gravity on an object

The measure of mass in each unit of volume

The ease in which a liquid flows

The amount of matter in an object

Anything that has mass and takes up space

Made up of protons and neutrons; makes up most of the mass of an atom

Chemical symbol for Magnesium

Chemical symbol for Oxygen

Chemical symbol for Hydrogen

Chemical symbol for Helium

Chemical symbol for Neon

Chemical symbol for Sodium

Chemical symbol for Sulfur

Chemical symbol for Nitrogen

Chemical symbol for Argon

Chemical symbol for Iron

Chemical symbol for Fluorine

Chemical symbol for Iodine

Chemical symbol for Calcium

Chemical symbol for Carbon

Chemical symbol for Chlorine

A subatomic particle that has a positive charge, found in the nucleus of an atom, determines the overall properties of an atom

A subatomic particle that has no charge, found in the nucleus of an atom

A subatomic particle that has a negative charge, found in the region around/outside the nucleus, determines an atom's chemical properties

Basic unit of matter

2 or more atoms bonded together in a fixed ratio

formed when 2 or more atoms bonded together

2 or more substances mixed, but NOT bonded together

only one type of atom

unit is used to measure volume of a regular solid

unit is used to measure weight

unit is used to measure volume of an irregular solid

unit is used to measure mass

unit is used to measure density

How to solve density

Matter is not created nor destroyed in any chemical or physical change

Every compound is made of the same elements combined in the same unique ratio by mass

Amount of space occupied by an object

Measured data needs

The change of state from a liquid to a gas

The change of state from a gas to a liquid

The change of state directly from a gas to a solid or solid to gas

The change of state from solid to liquid

The change of state from liquid to solid

the study of reactions involving the nucleus of an atom

Type of particle that decrease the atomic number by 2 and atomic mass by 4