Vocabulary
The substance(s) that are present at the start of a reaction.
What is a reactant?
How many oxygen atoms in: Zn(NO3)2
There are six oxygen atoms.
Balance this equation: H2 + O2 ---> H2O
2H2 + O2 ---> 2H2O
C
Carbon
Chemical equations must be balanced to satisfy the ___________.
What is the Law of Conservation of Mass/Energy?
A concise representation of a chemical reaction.
What is a chemical equation?
How many nitrogen atoms in: 2Zn(NO3)2
There are four nitrogen atoms.
Balance this: N2 + H2 --> NH3
N2 + 3H2 --> 2NH3
Be
Beryllium
In every balanced equation, each side has the same number of ______(s).
What is atoms?
What are the substances produced from a chemical equation?
What is a product
What are the reactants?
2H2 + O2 --> 2H2O
What is hydrogen & Oxygen?
Balance: H2 + O2 --> H2O
2H2 + O2 --> 2H2O
Ar
Argon
A metallic reaction occurs between?
A metal and a metal.
Two or more atoms of different elements chemically bonded together form a?
What is a molecule
What are the products?
CH4 + 2 O2---> CO2 + 2 H2O
Carbon dioxide & Water?
Balance P + O2 --> P2O5
What is 4P + 5O2 --> 2P2O5
Hg
Mercury
Why do all elements want to be like the group 18?
Because they are stable.
The arrow in the middle of a chemical equation represents?
What is a reaction.
List the reactants in this chemical equations.
Na2SO4 + CaCl2 --> CaSO4 + 2NaCl
2 sodium, 1 sulfur, 4 oxygen, 1 calcium, 2 chlorine
Mn
Manganese
Dmitri Mendeleev