1
Small dense substances that can conduct electricity and heat well.
What is a metal?
The center of an atom.
What is the nucleus?
A table that has all of the elements in it.
Something that has both metal and nonmetal characteristics and properties.
What is a metalloid?
A pure substance that cannot be broken down into simpler substances by chemical reactions.
What are elements?
What an element is composed of.
What is an atom?
The number of protons in an atom.
What is the atomic number?
An atom of an element that has a specific number of neutrons.
What is an isotope?
A row in the periodic table.
What is a period?
The columns in the periodic table that group elements based on their properties.
What are the groups of elements?
All matter is made out of atoms.
What is the atomic theory?
Negatively charged and are in the shells.
What is an electron?
Positively charged and is in the nucleus.
What is a proton?
Has neutral charge and isotopes depend on the amount of this.
What is a neutron?
Total of Protons + Neutrons.
What is the atomic mass?
Elements that have poor electrical conductivity and tend to accept electrons easily.
What is an a nonmetal?
How much AMU each individual proton and neutron has.
What is 1?
The number of elements in the periodic table.
What is 118?
The 2 rows separated at the bottom of the periodic table.
What are the Actinides and the Lanthanides?
Most of the mass in an atom.
What is the nucleus?
An atom.
What is a particle?
An electron.
What is a subatomic particle?
The type of elements on the last column of the periodic table.
What are noble gases?
What atoms are mostly.
What is empty space?
Any of a group of chemically similar metallic elements compromising the lanthanide series and (usually) Scandium and Yttrium.
What are Rare Earth elements?