Atoms
The center of the Atom
What is the nucleus
Pure substance that cannot be broken down
Describe this equation
H2 + O2 ---> H2O
unbalanced equation
BONUS
Balance the equation
Columns of the Periodic table are called this
Groups
Definite shape and volume
solid
Located in the nucleus
What are protons and neutrons
can be separated by physical means
What is a mixture
The substances that start the chemical equation are called this
Reactants
Rows of the Periodic table are called this
periods
increased temperature causes this
increased particle movement
Orbits around the nucleus
What is the electron cloud / Energy levels
Only separated in chemical reactions
compounds
Matter can be neither created nor destroyed
Law of Conservation of Mass
The group number tells us the
number of valence electrons
A sample is silver, shiny and conducts heat. What is it most likely?
Metal
Where most of the mass of an atom is located
What is the nucleus
a mixture is called this when one substance is dissolved in the other
What is solution
(homogeneous mixture)
the chemical combination or separation of substances is called this
chemical reaction
Metals are on the _______ side of the table
Left
Describe a sample that is multicolored, and some particles are magnetic
mixture
An atom is called this when it has the same number of protons and electrons
What is Neutral
a combination of atoms bonded together
DAILY DOUBLE
balance the following reaction
CH4 + O2 ---> CO2 + H2O
CH4 + 2 O2 ---> CO2 + 2 H2O
Group 18 is called
Noble gases
decrease in temperature