The halogens Study guides, Revision notes & Summaries

Mixture with uniform density throughout and no distinguishable coponents.Answer - Homogeneous Mixture Mixture in which the components are readily distinguished.Answer - Heterogeneous Mixture A change in which the checmical composition of a substance remains the same.Answer - Physical Change A change in which the chemical bonds are broken and reformed to create a new and different substance.Answer - Chemical Change The simplest of substances and is represented by a specific letter...

General Properties of Organic Compounds - correct answer - Melt and boil at lower temperatures - As # C's and the MW increase, BP/MP increase - Flammable, unstable, especially triple bonds - Triple bonds can: Polymerize, Spontaneously react with, Oxygen, Explode. Keep triple bonds away from: Heat & Oxygen/Oxidizers - Presence of halogens increases stability - Many are water in-soluble i.e. they sink such as CCl4, MeCl2, PCBs etc - Some are polar if they contain hetero oxygen atom such ...

General Properties of Organic Compounds CORRECT ANSWER - Melt and boil at lower temperatures - As # C's and the MW increase, BP/MP increase - Flammable, unstable, especially triple bonds - Triple bonds can: Polymerize, Spontaneously react with, Oxygen, Explode. Keep triple bonds away from: Heat & Oxygen/Oxidizers - Presence of halogens increases stability - Many are water in-soluble i.e. they sink such as CCl4, MeCl2, PCBs etc - Some are polar if they contain hetero oxygen atom such as k...

the physical material of the universe. It is anything that has mass and occupies space. CORRECT ANSWER Matter is made up of relatively few elements. CORRECT ANSWER Matter The smallest building block of matter. Smallest particle that retains the chemical property of the element (O, He, S). CORRECT ANSWER Atom Each _______ is made of the same kind of atom CORRECT ANSWER Element Combination of atoms held together in specific shapes CORRECT ANSWER Molecule No fixed volume or shape, co...

Things to Memorize for IB Chem HL 100% Correct Percentage Yeild actual yield/theoretical yield x 100 Avogadro's Law for gases One mole of any gas occupies 22.7 L at STP Ideal Gas Law PV=nRT (n is equal to the number of moles of the substance and R is the gas constant 0.082 or 8.314) Molarity equation moles of solute/liters of solution Dilution M1V1=M2V2 Hydrogen Emission Spectrum Color lines indicate the wavelengths of light that are released Balmer series A set of spec...

the physical material of the universe. It is anything that has mass and occupies space. - correct answer Matter is made up of relatively few elements. - correct answer Matter The smallest building block of matter. Smallest particle that retains the chemical property of the element (O, He, S). - correct answer Atom Each _______ is made of the same kind of atom - correct answer Element Combination of atoms held together in specific shapes - correct answer Molecule No fixed...

Disinfection - destruction of vegetative pathogens; usually on inanimate objects. Antiseptic - agent which prevents bact. contamination and growth; usually on living tissue. Which agent doesn't necessarily work better at higher concentrations? - Alcohol, 70% (goldie lock zone)(60-80% most effective) (Ethyl and Isopropyl) -Alcohol is very effective to resistant to inactivation by organic materials (halogens are not good at this) Name the factors that affect a disinfectant activity. - -Cont...

the physical material of the universe. It is anything that has mass and occupies space. - Matter is made up of relatively few elements. - Matter The smallest building block of matter. Smallest particle that retains the chemical property of the element (O, He, S). - Atom Each _______ is made of the same kind of atom - Element Combination of atoms held together in specific shapes - Molecule No fixed volume or shape, conforms to volume and shape of container, is compressible - Gas Individua...

Periods - Answer-left to right-gradual change Groups - Answer-up and down-super similar Alkali Metals - Answer-Group 1: Very reactive with H2O Usually only form one bond Alkaline-Earth Metals - Answer-Group 2: More stable than group 1 usually form 2 bonds Transition Metals - Answer-Group 3B-2B: Can make any number of bonds Bond like Group 1 & Group 2 Halogens - Answer-Group 7: Can only make one bond Noble Gases - Answer-Group 8: Nonreactive and can't make bonds Atomic Status - Answer-...

Chemistry 101 Exam 1 WSU Questions and Answers Already Passed How many electrons can an orbital hold? 2 How many electrons does the second shell (n=2) hold? 8 How many electrons does the third shell (n=3) hold? 18 What do like charges do? Like charges (positive-positive or negative-negative) repel each other What is the generic valence level electron configuration for the halogens (group 7A)? ns2np5 What is the generic valence level electron configuration for the alkali met...