Introduction
In a chemical reaction the substances to the right of the arrow are called
Products
What type of chemical equation uses formulas and symbols to represent a chemical reaction, but it DOES NOT obey the law of conservation of mass?
Skeletal equation
What type of chemical reaction is represented by the following pattern?
A + BC ---> B + AC
single displacement reaction
Reaction where two like elements in different compounds change places with each other to form two new compounds is known as a _________ reaction
Double replacement
The balanced chemical equation for
Na + Cl2 --> NaCl
2Na + Cl2 --> 2NaCl
You can balance a chemical equation using this number
Coefficient
A solid that forms from a solution during a chemical reaction.
a precipitate
CaCO3 (s) → CaO (s) + CO2 (g) - Identify the type of reaction
Decomposition reaction
The description below is what type of reaction chemical reaction?
Hydrogen peroxide (H2O2) when heated produces H2 gas and O2
Decomposition
Balance the reaction
N2 + H2 -----> NH3
N2 + 3H2 -----> 2NH3
In a chemical reaction the substances to the left of the arrow are called
Reactants
An expression in which symbols and formulas are used to represent a chemical reaction.
chemical equation
Reaction where two or more substances combine to form a single product is known as a ______ reaction.
Combination reaction
The equation shown below is an example of what type of reaction?
CaSO4 + 2K ---> K2SO4 + Ca
Single replacement reaction
What product(s) are formed when magnesium metal (Mg) reacts with oxygen gas (O2)? Write the balanced reaction.
MgO
2Mg+O2 .......> 2MgO
When balancing an equation, these numbers can not be changed.
a subscript
The original substance or substances in a chemical reaction are
Reactant(s)
A reaction where a more reactive element changes places with a less reactive element in a compound is called a ________
Single replacement reaction
The equation shown below is what type of chemical reaction?
2Na + Cl2 ---> 2NaCl
Combination
Balance the equation
CaCO3 ----> CaO + CO2
CaCO3 ----> CaO + CO2
In the formula 5CaSO4, this is the number of oxygen atoms.
20
The substance or substances that form in a chemical reaction are
product(s)
A reaction where one substance breaks down into two or more products is called a _______ reaction
Decomposition reaction
The equation show below is an example of what type of chemical reaction?
ZnI2 + AlBr3 ---> ZnBr2 + AlI3
Double replacement reaction
Name 2 of the 5 observations you will make to know that a chemical reaction has occurred
Change in Colour
Change in state
Change in temperature
Evolution of gas