Chemstry Study guides, Class notes & Summaries

Ace your Hesi A2 Chemistry exam.

Mixture A combination of two or more substances that are not chemically joined. Filtration Separates insoluble solids from liquids. Crystallisation The formation of crystals by cooling a saturated solution Simple distillation Used to separate a liquid from a solution

Relative mass of a proton 1 . Relative mass of a neutron about the same as that of a proton Relative mass of an electron 1/1840 Relative charge of a proton +1 Relative charge of a neutron 0 Relative charge of an electron -1 Neutral atoms same number of positive protons as negative electrons Atomic (proton) number the number of protons in the nucleus of an atom

2022/2023 PLACEMENT CYCLE PROGRAMME CUTOFFS #PROG CODEINSTITUTION NAMEPROGRAMME NAME2015 CUTOFF2016 CUTOFF2017 CUTOFF2018 CUTOFF2019 CUTOFF2020 CUTOFF2021 CUTOFF EGERTON UNVERSTYBACHELOR OF ARTS30..85126.5428. KSI UNIVERSTYBACHELOR OF ARTS CHUKA UNVERSITYBACHELOR OF ARTS30..79826.72928. KENYATTA UNVERSITYBACHELOR OF ARTS29..61226.98828. PWANI UNVERSITYBACHELOR OF ARTS SOUTH EASTERN KENYA UNVERSTYBACHELOR OF ARTS.88626. MACHAKOS UNIVERSTYBACHELOR OF ARTS MOI UNVERSITYBACHELOR OF ARTS28.....

Pre-mRNA is the initial processing byproduct of mRNA transcription and is crucial for the expression of genes in mammalian cells, since the majority of protein-coding genes are broken by intermediate regions (introns) (Han et al., 2011). Part 1 The first and initial action in the pre-mRNA processing is the addition of an mRNA cap at the 5' end. Once the RNA's initial 20–30 nucleotides have been created, capping takes place. According to Cohen, 7- methylguanosine residue is added to the...

H - Hydrogen He - Helium Fe - Iron N - Nitrogen Na - Sodium F - Fluorine Li - Lithium C - Carbon CO2 - carbon dioxide

HESI A2 CHEMISTRY QUESTIONS & ANSWERS 1)What is a neutralization reaction? - (ANSWER) a reaction in which an acid and a base react in an aqueous solution to produce a salt and water. 2. Out of the following, which is a molecular compound that ionizes in water: NaCl Cl2 HCl C6H6 - (ANSWER) HCl 3. Which of the following is an ionic compound that dissociates in water: NaCl Cl2 HCl C6H6 - (ANSWER) NaCl

kinetic molecular theory - answers all matter is made of tiny particles that are constantly moving fundamental particle - answers take a macroscopic object and divide it repeatedly. Eventually you have a particle, which, if further divided is no longer the original substance. This smallest piece of the substance is called... h2o molecule - answers the fundamental particle of water is what? atom - answers the basic unit of a chemical element molecule - answers two or more atoms (same ...

Its a BTEC level 3 applied science unit 14 Applications of organic chemstry Making of designer chemicals unit 14: Applications of organic chemistry

Mixture A combination of two or more substances that are not chemically joined. Filtration Separates insoluble solids from liquids. Crystallisation The formation of crystals by cooling a saturated solution Simple distillation Used to separate a liquid from a solution