Studied by 58 PeopleTags & Description
Matter
Anything that has weight and takes up space
Mass
Amount of particles in an object
Volume
The amount of space taken up by an object
What are the 3 states of matter?
Liquid, solid, and gas
Atoms
Fundamental building blocks of chemistry and the smallest piece of an element and matter
Molecule
A bond of two or more atoms
Compound
A bond of two or more atoms of a different element
Periodic table of elements
A chart containing all the different kinds of atoms
How many elements are there on the periodic table
118
What are vertical columns on the periodic table
Families/groups
What are horizontal rows on the periodic table
Periods
What does the atomic number represent
The amount of protons
What does the atomic mass represent
The amount of protons and neutrons combined
Mendeleev
Organized the periodic table by atomic mass and chemical properties
Mosely
Reorganized the periodic table by atomic number
What is all matter made out of?
Particles
What are atoms composed of?
Protons, neutrons, and electrons
Where are the protons in an atom?
The nucleus
Where are the neutrons in an atom?
The nucleus
Where are the electrons in an atom?
The electron cloud
What is the takeaway from the timeline?
Scientists build off of other scientists research and information
Periodic
Repeating at regular intervals
Which subatomic particle has a positive charge?
Proton
Which subatomic particle has no charge?
Neutron
Which subatomic particle has a negative charge?
Electron
Which subatomic particle gives the element its properties and identifies the element?
Protons
Which subatomic particle has the same amount as protons?
Electrons
What do families have in common on the periodic table?
The same amount of electrons in the valence level and have the same properties
What happens as you move through the periods?
The energy level increases