And on that's on Periodic!
Which has the greater electronegativity?
Cl or Al?
Cl
TiI4
titanium (IV) iodide
How many moles are in 25g of water?
1.4 mol
___________________ is the property of water that causes water molecules to “stick” to other substances. Ex. Glass of water sweats and sticks to a coaster
Adhesion
What causes the circular motion of water as it boils?
Convection
Metals are good conductors of heat and electricity.
True or False.
True
NH4OH
ammonium hydroxide
How many grams are in 8.2 x1022 molecules of N2I6
106.25 g
__________describes how water moves against gravity and can travel up a plant’s roots into its stem and leaves.
Capillary action
What is the process called when a metal spoon placed in hot water heats up?
Which group of elements typically has relatively low ionization energy?
Alkali metals
___ C2H6 + ___ O2 ---> ___ CO2 + ___ H2O
2, 7, 4, 6
How many grams are there in 2.3 x 1024 atoms of silver?
412 grams
Water is called the ______________ ________________ because of its ability to dissolve so many different substances.
universal solvent
What type of heat transfer occurs when heat is given off by light?
Radiation
A water molecule (H2O) is an example of a covalent bond because
Electrons are shared btween the hydrogen and oxygen
Ammonia gas (NH3) plus oxygen gas yields nitrogen monoxide gas plus water vapor.
4NH3(g) + 5O2(g) → 4NO(g) + 6H2O(g).
ammonium sulfite
% N ______
% H ______
% S ______
% O ______
% N 24.1
% H 6.9
% S 27.6
% O 41.3
Ice floats on water because:
Ice is less dense
Surface tension
How much heat is needed to raise the temperature of 10.0 g of aluminum from 22°C to 55°C, if the specific heat of aluminum is 0.90 J/g °C
297 J
How many atoms are there total in H2SO4?
7
Solid iron (III) oxide and carbon monoxide gas yields iron metal and carbon dioxide gas.
Fe2O3 (s) + 3CO (g) → 2Fe (s) + 3CO2 (g)
Acetylene gas (C2H2) is produced as a result of the following reaction.
CaC2(s) + 2H2O(l) ---> C2H2(g) + Ca(OH)2(aq)
If 3.20 moles of CaC2 are consumed in this reaction, how many grams of H2O are needed?
How many grams of Ca(OH)2 would be formed with 3.20 moles of CaC2?
115g H2O
237g Ca(OH)2
Capillary action of water in a tube is the result of _____ being stronger than _____.
Adhesion, cohesion
The specific heat(c) of copper is 0.39 J / g °C. What is the temperature change (∆T) when 100 Joules of heat is added to 20 grams of copper?
12.82 J