Conservation of Mass
What is the Law of Conservation of Matter
Matter/mass cannot be created or destroyed...the atoms may reaarrange but is conserved (within closed system)
Which process takes place within nuclear power plants?
What is fission
Name this reaction:
Sn + NaOH → Na2SnO2 + H2
What is single replacement
The substances that are found on left side of the arrow & on the right side of the arrow in a chemical equation.
What are the reactants (left) and the products (right)
unbalanced equation
What is when the number of atoms in reactants are not equal to the number of atoms in products
What do the products and reactants of a chemical reaction have in common?
What is they have the same amount of matter (# of atoms).
When chain reactions are not controlled within _____ process, what is created (can occur)?
fission
nuclear bombs/ weapons
A + B----> AB represents what type of reaction?
What is synthesis
Explain why scientists use chemical equations.
What is to demonstrate the law of conservation of matter/mass
Subscript
What is the number of atoms of that particular element in a molecule or compound Ex. H2O
50g of magnesium reacts with 20g oxygen. How many grams of magnesium oxide will be present after the reaction occurs?
What is 70g
What element is heavily used to produce NE in power plants.
What is Uranium
A chemical reaction where one reactant produces two or more products
What is decomposition
_HCl + _NaOH---> _NaCl + _H2O
What is already balanced
Coefficient
The number placed in front of a chemical symbol (element) or compound that represents the number of molecules present (multiples everything behind it) Ex 2H2O
DAILY DOUBLE:
Mg + O ---> MgO + O
48.6g + 50.0g --->80.6g + g?
What is 18g
Is fusion or fission a chemical reaction? why or why not
No- because atoms are NOT rearranging...there is something occuring within the nucleus of an atom
H3PO4 + KOH ----> K3PO4 + H2O
What is double replacement
_Na + _O2 --> _Na2O
4Na + O2 --> 2 Na2O
Fusion
When 2 smaller nuclei (atoms) combine together to form a large nucleus (immense amount of energy released)
Mg + O2 ------> MgO
?g + 16.0 g -----> 40.3 g
What is 24.3g
DAILY DOUBLE:
Give 2 pros AND 2 cons about NE
answers vary
The products of this reaction are water and carbon dioxide.
What is combustion
_ Cs + _N2 --> _Cs3N
6Cs + N2 --> 2Cs3N
An expression in which symbols, formulas, and coefficients are used to represent a chemical reaction
What is a chemical equation