Chemistry Flashcards
Is magnesium phospide an ionic compound
True
How many atoms is a polyatomic ion composed of?
2 or more
What ingredient is used in making mortar and plaster for construction?
Calcium Hydroxide
An ionic compound is composed of atoms with what charge?
Different charges: metals and non-metals
One electron is transferred from one sodium atom to one chlorine atom to form sodium chloride?
True
What is a reactant?
A reactant is a pure substance that is formed in a chemical change.
Salt (sodium chloride) is a covalent compound.
False
Name all the diatomic molecules.
H O F Br I N Cl
When carbon dioxide is formed, how many shared pairs of electrons are present?
4
What type of compound results from the reaction of carbon with sulfur?
Covalent
What type of compound would result from the reaction of cesium and fluroide?
Ionic
Write a word equation for the reaction of hydrogen with oxygen to produce water.
Hydrogen gas + Oxygen –> Water
Does acids have have a pH larger or less than 7.
Acids have a pH LESS than 7
What taste does acids have?
Sour
What feeling does bases have?
Slippery
Do Bases have a ph less than or more than 7.
Bases have a pH MORE than 7.
what pH does most cleaning agents have?
Bases = MORE than 7
An Oxacid consists of what?
Hydrogen, Oxygen, and another element
A solution is found to have an H+ concentration 10,000 lower than that of pure water. What would conclude this?
A basic solution with a pH of 11
A solution with an H+ ion concentration of 1 million times greater than pure water would be:
Acidic and have a pH of 1
The substance is found in coal, oil and natural gas and when burned contributes to acid percipitation.
S8
The substance is colourless and and non-conducting. When combined with water, it conducts electricity. The solution turns blue litmus red.
HCL
What are the properties of Acids.
- 0 - 6
- Sour
- Conducts electricity
- Corrosive
- Red
What are the properites of Bases.
- 8 -14
- Bitter
- Conducts electricity
- Non-corrosive
- Blue
In what type of chemical reaction will hydrocarbonate react with another element to produce carbon dioxide and water?
Combustion
When Magnesium metal and nitrogen gas react together, the correct formula for the product will be:
Mg3N2
K3PO4 + Fe(NO3)3 –>?
FePO4 + KNO3
If a reaction produces heat, carbon dioxide gas, and water vapour, the reactants were probably:
CH4 + O2
A piece of aluminum foil is placed in an aqueous solution of copper chloride. Within a few seconds, a solid brown metal appears to form and the aluminum metal appears to dissolve. This is classified as?
Single displacement
Which of the following pairs of reactants is likely to produce a pure metal when the reactants react together?
Al + CuCl2
Which of the following types of chemical reaction involves only ionic compounds?
Double replacement
