A small particle that makes up most types of matter
What is an atom?
100
Positively charged, central part of the atom.
What is nucleus?
100
The top number for each element in the Periodic Table that tells you the number of protons in the nucleus of each atom of that element.
What is atomic number?
100
Generally have a shiny or metallic luster and are good conductors of heat and electricity.
What are metals?
100
These are the 3 subatomic particles
What are protons, neutrons and electrons?
200
Anything that has mass and takes up space.
What is matter?
200
Where most of the mass of an atom is located
What is the nucleus?
200
The weighted average mass of the isotopes of an element.
What is atomic mass?
200
Elements that are brittle, usually dull in appearance and poor conductors of heat and electricity.
What are nonmetals?
200
The charge of an electron
What is a negative?
300
Invisible, negatively charged particles.
What are electrons?
300
Number of protons plus the number of neutrons it contains.
What is mass number?
300
This group on the periodic table has full energy levels
What are Noble Gasses - Group 18?
300
Elements that have characteristics of both metals and nonmetals.
What are metalloids?
300
The Period tells you about this structure
What are energy levels?
400
Positively charged particles in the nucleus.
What are protons?
400
An atom of an element that has a different number of neutrons
What is an isotope?
400
The name of the elements in group 17
What are Halogens?
400
The majority of elements on the Periodic Table can be characterized as _______________.
What are metals?
400
These are two things that elements in the same group have in common
What are similar properties and number of valence electrons?
500
Uncharged particles.
What are neutrons?
500
Atoms of the same element that have different numbers of electrons
What are ions?
500
Rows of elements are called ____________.
Columns of elements are called ____________.
What are periods and groups?
500
More than 97% of your body is made up of various ______________, a type of element that appears on the Periodic Table.
(HINT: The answer is NOT water!)
What are nonmetals?
500
If an atom gains an electron it becomes this. The charge of it will be ___________.