Atomic and molecular
Experimentation
Moles
Acid and Base
Metals
Rate and Kinetics
10
What part of the atom defines the element's atomic number?
Number of protons
10
How do you test for Ammonia?
You use red litmus paper to test and see if it turns blue
10
Calculate the number of moles in 44 grams of carbon dioxide (CO2).
1 mole
10
What is produced when an acid reacts with a metal carbonate?
Salt, water, and carbon dioxide
10
Which metal is more reactive: magnesium or zinc?
Magnesium
10
Forming a bond is what kind of reaction in heat
Exothermic
20
What is the term we define on electrons so that they are free to move?
delocalised
20
what is the name of this device?
Burette
20
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
20
True or False, water is not an oxide compound
False
20
What is the main reaction type in the extraction of metals from their ores?
Reduction
20
True or False, with greater pressure, the system will favor the side with less moles
True
30
Diamond is macromolecular chemical and melt at 1800 degree
No,1371
30
Why is the base line in paper chromatography drawn in pencil?
To not touch the solvent and the black ink, and mix the results
30
If you have 0.5 moles of water, how many molecules of water do you have?
3.011× 10^23 molecules
30
If Cola has pH of 3 and Distilled water has ph of 7, how many times more acidic is cola compare to water
10000
30
What is the most abundant metal in the crust?
Alumnium
30
What is the catalyst used in the Contact process, say the molecular formula or the compound name
Vanadium Oxide(V2O5)
40
What is the formula and charge of dichromate?
Cr2O7 2-
40
How do you test for carbon dioxide, chlorine, and oxygen?
Lime water, blue litmus paper and glowing splint
40
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
24 L or dm^3
40
Name four common examples of base in life
Toothpaste,soap,fertilizer, detergent, baking soda
40
What is the name of this machine?
Big Wheel Excavator
40
When we form a bond, is it endothermic or exothermic
Exothermic
50
What is the charge of a neutron?
Neutral (no charge)
50
True or false, simple disilliation is used to separate a liquid from an insoluble solid.
False, the insoluble solid
50
How many atoms are in one mole of any substance?
Avogadro's number, approximately 6.022×10236.022×1023 atoms
50
What color does blue litmus paper turn in an acid?
Red
50
What gas is produced when magnesium reacts with hydrochloric acid?
Hydrogen
50
True or False, catalyst will have effect on the rate of reaction
False