Classification or matter
Atom
Ionic and Covalent Compounds
Chemical Reactions
Rate of Reaction and Mixtures
100
What is chemistry?
Chemistry is the study of matter.
100
Name one scientist involved in making the atomic theory and list on thing they did.
Dalton- atomic theory
Thompson- plum theory
Rutherford- Nucleus
Bohr- Orbitals
100
What is an ionic compound?
It is a compound with a metal and non-metal and they transfer electrons.
100
What is a chemical reaction? How do we know one has occurred?
Mixing of chemicals and the creation of something new.
Colour change
formation of gas
100
Why do we want to control the speed of reaction?
Some reactions like rusting and corroding we want to stop.
If we are making something we want it to be faster.
200
What is a physical property? Give an example
A property that can be measured or observed. example: Melting temperature, luster, colour
200
What to subatomic particles are in the nucleus?
Proton and Neutrons
200
What is a covalent compound?
It is a compound that has 2 non-metals and they share electrons.
200
What is Conservation of mass?
Mass can not be created or destroyed, if you start with 10g you end with 10g.
200
What are the two major types of mixtures?
The two major types of mixtures are heterogeneous and homogeneous mixtures.
300
What is a chemical Property? Give a example.
Describes how something reacts with something else. Combustibility
300
What subatomic particle travels around the nucleus.
Electrons
300
What is the name for CaCl2?
Calcium Chloride
300
What are the reactants in the following combustion reaction?
C3H8(g)+5O2(g)→3CO2(g)+4H2O(g)
C3H8(g)+5O2(g)
300
What is one way to speed of a reaction?
- Surface area of reactants (ie. Powder form more than solid mass)
- Concentration of a reactant or adding more reactants (this means there less water and more concentration of chemicals in the solutionà think about making a powdered energy drink- a higher concentration means more powder, so sweeter)
- Higher temperature
- Stirring/mechanical mixing and movement
- Catalysts- chemicals added into a reaction that only speed up the reaction, don’t participate in the reaction
400
What is a family on a the periodic table?
Vertical group that has similar chemical properties.
400
How many protons does oxygen have?
atomic number 8 = 8 protons
400
What is the formula of trinitrogen hexasulfide?
N3S6
400
How many carbon and hydrogen are in the following formula?
C3H8
Carbon= 3
Hydrogen= 8
400
What is the difference between a pure substance and a mixture?
A pure substance is any substance that cannot be broken down further by physical means (such as elements and compounds)
A mixture is any substance that can be physically separated and or broken down (their constituents are not combined chemically).
500
What is the definition of matter.
Matter is defined as anything that takes up space and has a mass.
500
How many neutrons does carbon have?
12-6=6
500
What is the name of S2O2?
disulfur dioxide
500
What type of reaction is the following?
C(s) + 2H2(g) → CH4(g)
Formation Reaction
500
What is one way to slow down a reaction?
- Surface area of reactants (ie. Powder form more than solid mass)
- Concentration of a reactant or adding more reactants (this means there less water and more concentration of chemicals in the solutionà think about making a powdered energy drink- a higher concentration means more powder, so sweeter)
- Higher temperature
- Stirring/mechanical mixing and movement
- Catalysts- chemicals added into a reaction that only speed up the reaction, don’t participate in the reaction