This is the difference between a chemical property and a physical property
What is a physical property is a characteristic of a material that can be observed or measured without changing the composition. A chemical property is any ability to produce a change in the composition of matter.
200
This is the atomic mass of the atom Lithium (not rounded)
What is 6.941?
200
The noble gases fall under this category of elements.
What are non-metals?
200
These subatomic particles make up the mass of an atom.
What are protons, neutrons?
200
When 80 grams of aluminum is reacted with excess chlorine gas, how many formula units of AlCl3 are produced?
What is 2.96 moles AlCl3
200
Reactivity is an example of this kind of property.
What is a chemical property?
300
This is the atomic number of the element calcium
What is 20?
300
These subatomic particles make up the energy cloud around an atom.
What are electrons?
300
These subatomic particles make up the energy cloud around an atom.
What are electrons?
300
If 3.87×1023 particles of Sb2S3(s) are reacted with excess Fe(s), what mass of FeS(s) is produced?
What is 170 grams
300
These are the evidence for a chemical change having occurred.
What are change in color, the production of a gas, and the formation of a precipitate?
400
This is the amount of protons an an atom of Argon.
What is 18?
400
These subatomic particles have a negative charge.
What are electrons?
400
These subatomic particles have a negative charge.
What are electrons?
400
At STP, what volume of H2(g) is needed to react completely with 8.02×1023 molecules of CO(g)?
What is 59.7 L
400
When matter undergoes a chemical change, the ______________ of that matter changes. When matter undergoes a physical change, the ______________ of the matter remains the same.
What is composition?
500
This is the number of neutrons in an atom of Nickel.
What is 31?
500
An atom with 8 protons, 8 neutrons, and 8 electrons is an atom of this element.
What is Oxygen (O)
500
An atom with 8 protons, 8 neutrons, and 8 electrons is an atom of this element.
What is Oxygen (O).
500
Consider the following balanced equation:
4NH3 + 5O2 = 4NO + 6H2O
How many grams of O2 (formula wt = 32.0) are required for the complete reaction of 162 g of NH3 (formula wt = 17.0)?