Atoms
Which subatomic particle has a positive charge?
Proton
What gives the element is identity?
# of Protons/ atomic number
What is the chemical formula for water?
H2O
Liquid
The stuff that makes up everything in the universe.
Matter
Which subatomic particle has a neutral charge?
Neutron
What are the letters that represent an element on the periodic table called?
Atomic Symbol
What is a substance that is pure and cannot be broken down anymore?
Element
I have definite shape and definite volume.
Solid
What are the 3 states of matter?
Solid, liquid, gas
Which subatomic particle has a negative charge?
Electron
Noble Gas
Compound
I have no definite shape and no definite volume. I will expand to fill any container.
Gas
When energy is added to a liquid, it becomes a _____.
gas
These are located in shells outside of the nucleus?
Electrons
Name 3 characteristics of metal.
Luster (shiny), ductile, malleable
Draw the compound for 2CO2.
2 molecules with 1 carbon & 2 oxygen atoms.
I am made up of 10 protons, 10 electrons, and 10 neutrons.
Neon
Matter changes whenever this is added or taken away.
Energy
Which two particles are inside the nucleus of an atom?
Protons & Neutrons
Who created the periodic table?
Mendeleev
What is the chemical formula for table salt?
NaCl
I am unique compared to other elements -- I do not have a neutron in my nucleus.
Hydrogen
Molecules are made up of _______________.
2 or more atoms