Converting Units 1
___ centimeters are in 1 meter.
___ kilometers are in 1 meter.
What is 100 centimeters?
What is .001 kilometers?
[100 centimeters are in 1 meter]
[.001 kilometers are in 1 meter]
The three subatomic particles in an atom are ______, ______, and ______.
What are protons, neutrons, and electrons?
[The three subatomic particles in an atom are protons, neutrons, and electrons]
Group 7A elements have ____ valence electrons and will have a ____ charge when they achieve an octet.
What is 7 electrons and -1 charge?
[Group 7A elements have 7 valence electrons and will have a -1 charge when they achieve an octet]
What is left and right?
[In chemical equations, the reactants are to the left of the arrow, and the products are to the right of the arrow]
In a Periodic Table, rows are called ______ and columns are called _____.
What are periods and groups?
[In a Periodic Table, rows are called periods and columns are called groups]
There is 14,351 liters in a pool. In kiloliters, that is ____.
What is 14.351 kiloliters?
[There is 14,351 liters in a pool. In kiloliters, that is 14.351]
[T/F] In an atom, the atomic number represents the number of protons and neutrons and the mass number represents the number of protons.
What is FALSE?
[In an atom, the atomic number represents the number of protons, and the mass number represents the mass of the protons and neutrons!!!!!!]
Group 7A elements are called ____ and Group 8A elements are called ____.
What are halogens and noble gases?
[Group 7A elements are called halogens and Group 8A elements are called noble gases]
[T/F] When we balance chemical equations we are changing the subscripts (numbers) of the atoms or molecules.
What is FALSE?
[When we balance chemical equations. we are NOT changing the subscripts but the coefficients of the atoms or molecules]
In ionic bonds, electrons are ______ between atoms, and in covalent bonds, electrons are _____ between atoms.
What is transferred and shared?
[In ionic bonds, electrons are transferred between atoms, and in covalent bonds, electrons are shared between atoms]
In the SI symbol km, the "m" stands for ___.
What is meter?
[In the SI symbol km, the "m" stands for meter]
All atoms want to have ____ # of electrons.
What is 8 electrons (or, an octet)?
[All atoms want to have 8 electrons]
If an element has 7 protons and its mass number is 15, that element is called _____ and it has _____ neutrons.
What is nitrogen and what is 8 neutrons?
[If an element has 7 protons and its mass number is 15, that element is called nitrogen and it has 8 neutrons]
Balance the chemical equation (everyone can get credit)
CH4 + O2 --> CO2 + H2O
CH4 + 2O2 --> CO2 + 2H2O
Mono means ____.
Di means ____.
Tri means ____.
Penta means ____.
Tetra means ____.
What is 1, 2, 3, 5, and 4?
Mono means 1. Di means 2. Tri means 3. Penta means 4. Tetra means 5.
Mass is measured in ____.
Volume is measured in ____.
What is grams?
What is liters?
[Mass is measured in grams]
[Volume is measured in liters]
The Lewis Structure of Carbon is ____.
What is [Draw on the board]?
Group 1A elements are called _____ ______.
What are alkali metals?
[Group 1A elements are called alkali metals]
[T/F] We use chemical equations to describe physical reactions.
What is FALSE?
[We use chemical equations to describe chemical reactions]
In a solution, the ____ is something that gets dissolved and the ____ is what does the dissolving.
What is solute and solvent?
[In a solution, the solute is something that gets dissolved and the solvent is what does the dissolving]
A meterstrick is 100.0 centimeters long. It is ___ inches (1 in = 2.54 cm)
What is 39.37 inches?
[A meterstrick is 100.0 centimeters long. It is 39.37 inches (1 in = 2.54 cm)]
When an electron becomes excited, it ____ energy and moves to a ____ energy level.
What is gains and higher?
[When an electron becomes excited, it gains energy and moves to a higher energy level]
[T/F] Bonds formed between Group 1A elements (other than hydrogen) and Group 7A elements are called ionic bonds
What is true?
[Bonds formed between Group 1A elements (other than hydrogen) and Group 7A elements ARE in fact called ionic bonds. They are formed between metals and nonmetals]
[T/F] The number in CH4 is the coefficient.
What is FALSE?
[The number in CH4 is the subscript. The number in 2Br is the coefficient]
_____ is considered by many to be the most athletic person to ever exist.
Who is ANYONE YOU PUT BUT JAKE?
[The moral here is to never suck up to your teacher at the expense of the truth]