Atomic and molecular
Experimentation
Moles
Acid and Base
Metals
100
What part of the atom defines the element's atomic number?
Number of protons
100
How do you test for Ammonia?
You use red litmus paper to test and see if it turns blue
100
Calculate the number of moles in 44 grams of carbon dioxide (CO2).
1 mole
100
What is produced when an acid reacts with a metal carbonate?
Salt, water, and carbon dioxide
100
Which metal is more reactive: magnesium or zinc?
Magnesium
200
What is the term we define on electrons so that they are free to move?
delocalised
200
what is the name of this device?
Burette
200
In a reaction, 2 moles of A react with 3 moles of B. If you have 6 moles of A, how many moles of B do you need for a complete reaction?
9 moles of B
200
True or False, water is not an oxide compound
False
200
What is the main reaction type in the extraction of metals from their ores?
Reduction
300
Diamond is macromolecular chemical and melt at 1800 degree
No,1371
300
Why is the base line in paper chromatography drawn in pencil?
To not touch the solvent and the black ink, and mix the results
300
If you have 0.5 moles of water, how many molecules of water do you have?
3.011× 10^23 molecules
300
If Cola has pH of 3 and Distilled water has ph of 7, how many times more acidic is cola compare to water
10000
300
What is the most abundant metal in the crust?
Alumnium
400
What is the formula and charge of dichromate?
Cr2O7 2-
400
How do you test for carbon dioxide, chlorine, and oxygen?
Lime water, blue litmus paper and glowing splint
400
2NH4NO3(s)→2N2(g)+4H2O(g)+O2(g)
Suppose you start with 80.0 grams of ammonium nitrate. Calculate the following:
The volume of nitrogen gas produced at standard temperature and pressure (STP). Assume 24L/dm^3
22.4 L or dm^3
400
Name four common examples of base in life
Toothpaste,soap,fertilizer, detergent, baking soda
400
What is the name of this machine?
Bucket Wheel Excavator
500
What is the charge of a neutron?
Neutral (no charge)
500
True or false, simple disilliation is used to separate a liquid from an insoluble solid.
False, the insoluble solid
500
How many atoms are in one mole of any substance?
Avogadro's number, approximately 6.022×10236.022×1023 atoms
500
What color does blue litmus paper turn in an acid?
Red
500
What gas is produced when magnesium reacts with hydrochloric acid?
Hydrogen