States of Matter
This state of matter has a definite shape and definite volume because the particles are tightly packed and only vibrate
Solid
This tiny particle is the basic building block of all matter
atom
This is formed when two or more elements chemically combine.
Compound
These are the starting substances in a chemical reaction. (Left side of chemical equation)
Reactants
This number on the periodic table equals the number of protons in an atom.
This state of matter has a definite volume but only takes the shape of it's container.
Liquid
This subatomic particle has a positive charge and is found in the nucleus.
Proton
Octet rule
These are the new substances formed in a chemical reaction. (Right side of the equation)
Products
Columns on the periodic table are called this.
groups
This state of matter has no definite shape or volume
Gas
This subatomic particle has a negative charge and is found outside the nucleus.
Electron
These substances are physically combined but not chemically combined
Mixture
This law states that matter cannot be created nor destroyed.
Rows on the periodic table are called this.
periods
This process occurs when a liquid changes into a gas because particles gain enough energy to move freely
evaporation
The number of these particles determines the identity of the element
Proton
Salt dissolved in water is an example of this.
Solution
A color change, gas formation, or temperature change are examples of this.
Chemical reaction
Elements in the same vertical column on the periodic table share this characteristic
similar chemical properties
When a solid changes directly into a gas without becoming liquid first, this process occurs.
Sublimation
Atoms of the same element with different numbers of neutrons are called this.
Unlike mixtures, compounds can only be separated by this type of change.
Chemical change
Synthesis reaction
Elements in the same row on the periodic table share this characteristic
Same number of electron shells