What is the smallest particles of an element that relates to the chemical properties of the element.
100
What are atoms of the same element that have different masses?
What is isotopes
100
What is non-electrolyte ?
What is Solutions that dissolve in water to form solutions that don't conduct electricity
100
What is an unsaturated solution?
What is a solution that contains less solute that a saturated solution under the existing condition.
100
Find the molarity of a solution that contains 125g NaCl in 4.00 L solution? Molar mass of NaCl= 58.44
What is 0.535
200
Atomic nuclei are composed of what?
What is protons
200
What is the number of protons of each atom of the element?
What is atomic number
200
What happens in a colloid mixture?
What is colloids do not settle out and they scatter light
200
What is a miscible?
What is liquids that dissolve freely in one another in any properties
200
Find the molarity of a solution that contains 85.0g of NaCl that has a volume of 750. mL. ( Molar mass of NaCl=58.44
What is 2M
300
Who discovered that the volume of nucleus was very small compared with the total volume of an atom?
Who is Zealander Ernest Rutherford
300
What are mass numbers?
What is the total number of protons and neutrons that make up the nucleus of an isotopes
300
What the three types of mixtures?
What is solutions, suspensions and colloids.
300
Solute crystal is dropped into a solution containing dissolved solute. It falls to the bottom of the beaker and does not dissolve after vigorous stirring. What does this indicate about the solution?
What is it probably supersaturated
300
Molal concentration of a solution represents the ratio of moles of what
What is moles of solute to liters of solution
400
What particle has a mass number of zero?
What is electron
400
What is exactly 1/12 the mass of Carbon- 12 atom?
What is atomic mass unit (amu)
400
What is the components of a solution?
What is solvents and solutes
400
Two immiscible substances
What is will not form a solution
400
What is concentration
What is a measure of the amount of solute in a given amount of solvent or solution
500
How many protons and neutrons are in uranium-235?
What is/ How many 92 protons and 143 neutrons
500
What does this abbreviation mean? (mol)
What is mole
500
Which is not an example of a colloid?
a. Sugar water
b. smoke
c. butter
d. paint
What is a sugar water
500
Which is likely to produce a crystal if disturbed?
a. electrolytic
b. Saturated solution
c. Supersaturated solution
d. Unsaturated solution