Atoms
Molecules
Law of Conservation of Mass
Bonding
Acids and Bases
100
What are the three parts of an atom?
Protons, Neutrons, and Electrons
100
What is the difference between an atom and a molecule?
Molecules are made up of multiple atoms
100
What is the law of conservation of mass?
Matter can not be created or destroyed it only changes forms
100
What is a chemical bond?
A force that attaches atoms to each other to form molecules
100
What "scale" measures how much acid or base is in a compound?
pH Scale
200
Write out each of the parts of an atom and identify each of their charges.
Proton: Positive Neutron: Neutral Electron: Negative
200
How many atoms are in an oxygen molecule?
2
200
All chemical reactions follow the law of conservation of mass which means that the sum of their reactants will equal what?
the sum of their products
200
What type of bond forms when electrons are "donated" from one atom to another?
Ionic Bond
200
What is the range (numbers) of the pH Scale?
0 or 1-14
300
How can you find the number of protons in an atom?
It's atomic number
300
How many atoms are in a methane molecule?
5
300
If I react 10 grams of baking soda and 5 grams of vinegar together, what is the mass of my products?
15 grams
300
What type of Bond forms between atoms that "share" their electons?
Covalent
300
Acids will always have a _____________ pH
Low
400
Carbon-14 has an atomic number of 6 and an atomic mass of 14. How many electrons does carbon have?
6
400
What is the molecular formula for Table Salt?
NaCl
400
If I react 1 methane molecule with 2 oxygen molecules to form carbon dioxide and water, how many CO2 and H2O molecules will I form? (hint: Draw and balance the reaction)
1CO2 2H2O
400
Draw a Lewis Dot structure for the covalently bonded Carbon Dioxide molecule (CO2)
::O=C=O::
400
Bases always have a _________________ pH
High
500
Draw a Lewis Dot structure of a Neon atom (Ne: atomic number 10)
8 electrons around Ne
500
Draw a Pentane molecule
5 carbons 12 Hydrogens
500
In Photosynthesis, Carbon Dioxide (CO2) and Water (H2O) react to form glucose (C6H12O6) and Oxygen (O2). Write and balance the equation for photosynthesis
6CO2 + 6H2O --> C6H12O6 + 6O2
500
Draw a lewis dot structure for Potassium Sulfide (K2S)
k-->S<--K
500
If you mix an acid and a base together resulting in a pH of 7, what do we call that solution?
Neutral
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