It's a Small World
the smallest unit of matter that retains the chemical properties of an element
What is an atom?
A substance that cannot be broken down into simpler substances by chemical means composed of atoms with the same number of protons in their nucleus
What is an element?
It organizes all discovered chemical elements in rows (called periods) and columns (called groups) according to increasing atomic number
What is the Periodic Table?
They are found in the middle of the Periodic Table
What are the Transition Metals?
Going from a solid to a liquid and a liquid to a solid
What are melting and freezing?
A negatively charged particle that spins on an atom's outer shell
What is an electron?
The smallest particle of a substance that has all of the physical and chemical properties of that substance. It is made up of two or more atoms.
What is a molecule?
A letter or pair of letters used to represent a chemical element
What is the Chemical Symbol?
They are very reactive and often explosive nonmetals.
What are the halogens?
This happen when molecules at the surface of a liquid are tightly packed together allowing objects to float
What is Surface Tension?
A subatomic particle with a positive electrical charge, located within the nucleus of the atom.
What is a proton?
A substance that are formed by physically mixing two or more substances.
What is a mixture?
The number of protons in an element looking at the periodic table
What is the atomic number?
These gases that can light up don't react with anything
What are the Noble gases?
Going from a liquid to a gas and a gas to a liquid
What are Evaporation and Condensation?
A subatomic particle found in the nucleus of an atom and it has no electrical charge
What is a neutron?
A substance which can be formed by chemically combining two or more elements
What is a compound?
The average quantity of matter contained in an atom of an element
What is the Atomic Mass?
These elements are rare earth heavy metals that occur in nature
What are the Lanthanides?
It is when a gas is electrified creating a plasma
What is Ionization?
The positively charged central core of an atom, consisting of protons and neutrons and containing nearly all its mass.
What is the nucleus?
Elements that have the same number of protons, but with different numbers of neutrons.
What are Isotopes?
These groups are very soft and very reactive metals
What are Alkali metals or Alkaline earth metals?
These radioactive heavy metals are seldom found in nature being created in science labs that disappear quickly
What are the Actinides?
The five states of matter
What are Solids, Liquids, Gases, Plasmas, and Bose Einstein Condensates?