Labs
What do you wear when dealing with harmful chemicals?
Gloves and goggles.
What are the states of matter?
Gas, Liquid, solid
Convert moles to moles.
Ex. If 1.536 moles of Ni(NO3)2 are reacted, how many moles of C4H8N2O2 will also be reacted?
Ni(NO3)2 + 2 C4H8N2O2 → Ni(C4H7N2O2)2 + 2 HNO3
3.072 moles C4H8N2O2
What type of reaction is A+B=AB?
Synthesis
What is a limiting reactant (+100 if you can state what the excess reactant is)
The limiting reagent is a reactant in a chemical reaction that determines the amount of product that is formed. It is the lesser number. The excess reagent is a substance that is not wholly consumed or entirely reacted in a chemical reaction.
List 3 safety precautions you should take during labs.
Don't touch eyes, wear gloves, girls put hair up, put goggles on if needed, no horseplay.
What is the electron dot notation for CF4
(+100 if you can say what its geometry is.)
Geometry-tetrahedral
Who invented the lightbulb?
Thomas Edison
Who performed in the 2023 super bowl halftime show?
Rhianna
The reactant which is entirely consumed in the reaction is known as…?The reactant that is not entirely consumed is known as what…?
The limiting reactant is all consumed.Excess reactant is left over.
What is used to scoop out chemicals?
scupula/ spatula
What are water properties? Give at least 4 examples.
Melting point, boiling point, density, and ability to conduct electricity.
What is the full compounds name of Ca+FeSO4 = Ca(SO4)2 + Fe
Iron(II) sulfate-> Calcium sulfate
What are three signs of a chemical change?
Bubbles, gas, heat
1.4261 moles of Cl2 and 1.0192 moles of H2 how much HCL are produced
H2+Cl2=2HCL
H2 is the limiting reactants
What year was the rock born?(+300 if you guess the day and month)
May 2nd, 1972
On average what is the thing that Americans do over 22 times a day?
Open the fridge.
Balance: C6H12O6+O2=CO2+H2O
6,6,6
What is the formula for glucose?
C6H12O6
If you have an actual yield of 29.3 grams of product and the theoretical yield is 35.0 grams, what is your percent yield?
83.7%
What lab did we do for Christmas time specifically?
Borax snowflakes
Whose atom is shown?
Daltons
Convert from grams to grams
Ex .If 79.09 grams of K2O are reacted, how many grams of O2 will also be reacted?
K2O + O2 → K2O2
13.43 grams O2
What person has been spotted in a disco ball around the school?
Taylor Swift
The ‘girl in the polka dot dress’ was an eyewitness in whose assassination?
Robert F. Kennedy