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[…]

These equations are important for SAT and ACT math. – Percent change: (new-old)/old * 100 – Percent error: (experimental-theoretical)/theoretical *. 100

CH4 + 2O2 –> CO2 + 2H2O Left hand side: 1 C, 4 H, 4 O Right hand side: 1 C, 4 H, 4 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

Noble gases: – Helium (He) – Neon (Ne) – Argon (Ar) – Krypton (Kr) – Xenon (Xe) – Radon (Rn)

Alkali metals: – Hydrogen (H) – Lithium (Li) – Sodium (Na) – Potassium (K) – Rubidium (Rb) – Casein (Cs) – Francium (Fr)

Elements: – Na = sodium – K = potassium – Ca = calcium – Mg = magnesium – C = carbon – Al = aluminum – S = sulfur – Cl = chlorine – O = oxygen – Fe = iron

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[…]

– 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 solid that emerges from[…]

There are 3/4 ways to separate 2 full sentences 1. period 2. semicolon ; 3. COMMA FANBOYS ,for ,and ,but ,or ,so ,nor 4. colon : 1-3 are only for 2 full sentences option 4 can or cannot be for two full sentences colons are also for lists and definitions/explanations