No commas for prepositional phrases What does this mean? When you see words like in on for by from to with around of Don’t use commas for them. Examples from the test C02. These sentences have no commas. The team that prevails in two of the three periods wins the game. Sweet Auburn’s designation in[…]
The SAT and ACT both test your precision of language. – No commas around a name – Watch for singular/plural issues (singular–it and plural–they) – No comma between subject and verb – The company made. no commas here – Check to make sure you have a full sentence – 3/4 ways to separate 2 full[…]
Definitions for Chemistry Labs: – Solution = liquid mixture – Titrant = solution of a known concentration. Use a burette to put the titrant into a solution (in a beaker). – Solute = minor component that is uniformly distributed in the solvent – Solvent = major component that contains the solute – Precipitate = insoluble[…]
Did you know? The ACT has a science section that tests skills such as analyzing scientific observations. Freezing: the substance changes from a liquid to a solid. Melting: the substance changes from the solid to the liquid. Condensation: the substances changes from a gas to a liquid. Vaporization: the substance changes from a liquid to[…]
Did you know? These are some basics of chemistry that are important to know for the ACT Science section. Elements: – Na = sodium – K = potassium – Ca = calcium – Mg = magnesium – C = carbon – Al = aluminum – S = sulfur – Cl = chlorine – O =[…]
Below are a few of the most commonly known compounds: Glucose – C6H12O6 Hydrochloric acid – HCl Water – H2O Salt – NaCl Octane – C8H18 Baking soda – NaHCO3 Hydrogen peroxide – H2O2
CH4 + 2O2 –> CO2 + 2H2O Left hand side: 1 C, 4 H, 4 O Right hand side: 1 C, 4 H, 4 O
These equations are important for SAT and ACT math. – Percent change: (new-old)/old * 100 – Percent error: (experimental-theoretical)/theoretical *. 100
Total mechanical energy = kinetic energy + potential energy Mechanical energy is the sum of kinetic and potential energy in an object that is used to do work. It’s the energy in an object due to its motion or position. KE = 0.5mv^2 PE (energy stored in an object) = mass*g*height [g = acceleration due[…]
Molar mass is measured in grams per mole. You may need to calculate molar mass of a compound. This info is found in the periodic table. Example: NaCl has a molar mass of 58.35 (22.9+35.45) Na:22.9 Cl:35.45