Types of Reactions
What are the 5 general types of reactions
Redox(Combustion),Decomposition, Single Replacement,Double Replacement, and Synthesis
Elements within a group have the ____ number of valence electrons.
same
True or False?
Mendeleev was the first scientist to arrange elements in a periodic table
False
What is the symbol for Potassium?
K
What is the chemical formula for the following?:
potassium chloride
KCI
2Hg+O2 ->2HgO
Which Type of reaction is this
Synthesis
What is the most abundant element in the earths crust.
Oxygen
Mendeleevs strategy for classifying elements was modeled on a(n)
card game/solitare
What elements symbol is "Al"?
aluminum
What is the chemical formula for the following?:
sliver nitrate
AgNO3
AB+CD -> AD+CB
Differences in reactivity among alkaline earth metals are shown by the way they react with_____.
water
True or false?
A periodic table is an arrangement of elements in columns,based on set of properties that repeat from row to row.
True
What is the symbol for Sodium?
Na
What is the chemical formula for the following?:
silicon dioxide
SiO2
Ca+2HCI -> CaCI2 H2
Which type of reaction is this?
Single Replacement
Why is chlorine added to drinking water?
to kill bacteria
True or false?
Mendeleev needed to organize information for about 63 elements
True
Whats elements symbol is "Au"
Gold
What is the balanced equation for the following?:
calcium carbonate ->calcium oxide + carbon dioxide
CaCO3 ->CaO + CO2
How many reactants does Decomposition have?
1 reactant(compound)
Name 4 characteristics of noble gases
colourless, odourless, tasteless, nonflammable
What part of information did Mendeleev NOT know about for each element?
A.)Name B.) number of protons C.)relative mass D.)Properties
B.) numper of protons
What is the symbol for Calcium?
Ca
What is the chemical formula for the following?:
calcium fluoride
CaF2