Put these in order from LOWEST to HIGHEST Kinetic Energy: gas, solid, liquid
Solid, liquid, gas
100
How can you make a super-saturated solution?
Heat a saturated solution to dissolve more solute
100
How many valence electrons does an atom of Nitrogen have? What kind of ion will it form to satisfy the octet rule?
5, -3 anion
100
Balance this equation ____ N2 + ____ F2 --> ____ NF3.
What kind of reaction is this?
1, 3, 2 - Synthesis
100
How many particles are in a mole?
6.02 x 10^23
200
If you _________________ the temperature of a ________________ it is called condensation
Decrease, Gas
200
Will an insoluble solution be heterogeneous or homogeneous?
Heterogeneous
200
An ion has 12 protons and 9 electrons. What element is this and what charge does it have?
Mg +3 cation
200
Balance this equation: ____ Pb(OH)2 + ____ HCl --> ____ H2O + ____ PbCl2.
What kind of reaction is this
1, 2, 2, 1 - Double displacement
200
What is a noble gas?
An element with 8 electrons in its outer shell
300
Name the three particles in an atom and their charges
Neutron - neutral
Proton - positive
Electron - negative
300
In a solution, will there be more solute or more solvent?
Solvent
300
What is the name of this compound: Li3P
Trilithium phosphide
300
Name two ways to prove a chemical equation follows the Law of Conservation of Mass
1. Number of atoms of each element is the same for reactants and products. 2. Mass of reactants is equal to the mass of the products.
300
______________ changes to ________________ in sublimation
solid, gas
400
An isotope of a certain element has 13 neutrons and 12 protons. What element is it?
Magnesium
400
Two liquids are being distilled. Liquid A has a boiling point of 100 degrees. Liquid B has a boiling point of 120 degrees. Which liquid will be left in the original container after distillation?
Liquid B
400
Write the formula for sodium phosphate
Na3(PO4)
400
Write this sentence as a chemical equation (include phases): Aluminum sulphate solution and aqueous calcium hydroxide produce a precipitate of aluminum hydroxide and solid calcium sulphate.
assign oxidation numbers to each element in this polyatomic ion: (SiO4) -4
Si = +4, O = -2
500
Write the isotope notation for an atom with 12 neutrons and 9 protons
21 F 9
500
Solution A is 500 mL solution of salt water with 50 grams of salt.
Solution B is a 100 mL solution of salt water with 20 grams of salt.
Which solution is more dilute?
Solution A
500
What is the formula for copper (III) fluoride
CuF3
500
Balance and then find the mass of products and reactants of this equation:
____ CF4 + ____ Br2 --> ____ CBr4 + ____ F2
408 g = 408 g
500
What is the difference between a physical and a chemical change?
Physical change = no new substance is made, reversible/temporary
Chemical change = new substance is made, permanent