Demetrius

Fahrenheit - 1.8(C) + 32 Celsius - (F-32)/1.8 Physical property - properties can be observed without changing the identity of the substance under observation Chemical property - properties can only be observed during a change int he identity of the substance under observation examples of chemical properties - corrosive, combustible, mutagenic, teratogenic, explosive examples of physical properties - size, malleability, ductility, conductivity, density, state of matter Homogenou...

Chemistry correct answer: The study of matter and the changes it undergoes Matter correct answer: Anything that has mass and occupies space Element correct answer: Basic material that can NOT be broken down into simpler substance What is matter made up of? correct answer: Atoms and Molecules Density of water correct answer: 1.00g/mL 1 kg = ? lbs correct answer: 2.205 lb 1 meter = ? in correct answer: 39.37 in 1 in = ? cm correct answer: 2.54 cm Precision correct a...

Hypothesis correct answer: a testable educated guess Experiment correct answer: how we test hypotheses Variable correct answer: Idea to be tested (only one) Control correct answer: Something the variable is tested against Experimental protocol correct answer: How do you do the test? Results correct answer: Data generated comparing variable to controls. Includes statistics to show results are meaningful Conclusion correct answer: Interpretation of results independent v...

Saturated correct answer: alkane Unsaturated correct answer: alkenes and alkynes CH3CH2CH2CH2CH3 correct answer: Pentane C2H6 correct answer: Ethane what are your terminal carbons correct answer: CH3 CH3-CH2-CH3 | CH3 correct answer: 2-methyl-propane T or F: the branch needs to have to lowest number possible correct answer: true CH3-CH2-CH2-CH3 | CH3 correct answer: 2-methyl- butane Alcohol correct answer: ROH what is an example of alcohol correct answ...

Polyatomic ions correct answer: ions that are made of more than one atom Nitrate correct answer: NO3- Nitrite correct answer: NO2- bicarbonate (hydrogen carbonate) correct answer: HCO3- Sulfate correct answer: SO4 2- Sulfite correct answer: SO3 2- Carbonate correct answer: CO3 2- cyanide correct answer: CN- Hydroxide correct answer: OH- Phosphate correct answer: PO4 3- Ammonium correct answer: NH4+ Ionic compounds correct answer: - crystalline solid ...

what is the formula for ionic compound correct answer: Xm+ Yn-= XnYm name the ionic compound Na+ I- correct answer: NaI name the ionic compound Ba2+ O2- correct answer: BaO Name ionic compounds Mg2+ N-3 correct answer: Cross multiply Mg3N2 (numbers are subscript) What is an ionic compound correct answer: metal and nonmetal How do you name ionic compounds? correct answer: Name the metal ion (first one), then name non-metal ion and end element with suffix "ide" polytonic ...

ionic compounds correct answer: -deals with charged particles -oppositely charged particles are attracted to each other -look for presence of metals and polyatomic ions molecular compounds correct answer: -share electrons -nonmetals -no polyatomic ions unless its an acid Type I metals correct answer: -ionic compounds -group 1A,2A,3A -one type of charge state -Name of metal +ion -if metal+nonmetal: name of metal+base name of nonmetal +ide -if metal+polyatomic ion: name of meta...

What is the correct order of melting points for the following alkanes, from highest to lowest temperature? correct answer: heptane > hexane > ethane > methane 2. Given an alkane that contains 25 carbon atoms. How many hydrogen atoms are present in its structure? a) correct answer: ) 52 3. Which of the following properly describes constitutional (structural) isomers? correct answer: compounds with the same molecular formula, but a different order of attachment of atoms 4. How...

molecular mass (molecular weight) correct answer: the sum of the atomic masses, in atomic mass units, of all the atoms in the formula of a compound empirical formula correct answer: a chemical formula showing the ratio of elements in a compound rather than the total number of atoms Avogadro's number (Mole) correct answer: 6.02 x 10^23 proton correct answer: A subatomic particle that has a positive charge and that is found in the nucleus of an atom neutron correct answer: A suba...

define matter correct answer: anything that has mass and takes up space what is not considered matter? correct answer: light, heat, electricity definite shape, definite volume correct answer: solid indefinite shape, definite volume correct answer: liquid indefinite shape, indefinite volume correct answer: gas pure substance correct answer: one substance; definite and constant composition; can't be separated into 2 kinds of matter by physical means; single kind of matter ...

Levelling Effect correct answer: the inability of a solvent to differentiate amongst the relative strength of all acids OH- correct answer: the strongest base possible H3O+ correct answer: the strongest acid possible Differentiating effect correct answer: the ability of a solvent to differentiate among the relative strengths of all acids Common Ion Effect correct answer: the shift in equilibrium caused by the addition of a compound having an ion in common with the dissolved subs...

Which of these contributions did alchemists of the Middle Ages make to modern science? correct answer: -Sun-centered universe and metallurgy -Metallurgy and the development of scientific techniques -The scientific method and law of conservation of mass -Law of conservation of matter and first atomic theory -Law of conservation of mass and law of constant composition Which of these is the best definition of a scientific hypothesis? correct answer: -A prediction based on a limited number ...

What is a good scientific definition of a chemical? correct answer: Chemical- any substance made up of one or more elements from the periodic table What is the difficulty in defining the chemical industry in terms of the periodic chart? correct answer: The definition of a chemical is too broad. Too much would be included in the chemical industry. What is the chief source of the chemicals known as inorganic chemicals? correct answer: Inorganic chemicals come from ores and minerals mined ...

chemistry correct answer: the science that tries to understand how matter behaves by studying how atoms and molecules behave scientific method correct answer: ways of learning that emphasizes observation and experimentation (self correcting) observation correct answer: we go out in nature and ask questions we measure or observe some aspect of nature hypothesis correct answer: tentative interpretation of an observation law correct answer: summarizes a large number of observations...

How many bonds can nitrogen have? Which rule or principle should be used? A) Five bonds; octet rule. B) Three bonds; octet rule. C) Three bonds; the Hund's rule. D) Five bonds; the Aufbau Principle. correct answer: B When two hydrogen atoms meet, they will attract to each other and form a bond (and a H2 molecule). Why? A) Because electrons like to stay together. B) Because electrons like to be paired up. C) Because there is attraction between the electron in one hydrogen atom an...

Significant Figure correct answer: a digit that is either reliably known or closely estimated conversion factors correct answer: relationship between two quantities expressed as a fraction (1 inch/2.45cm) element correct answer: the most basic form of matter that exists under ordinary condidtions compound correct answer: a unique, pure substance that is composed of two or more elements which are chemically combined atom correct answer: smallest fundamental particle of an eleme...

SI unit for Temperature correct answer: C F correct answer: (9/5 C) + 32 C correct answer: 5/9 (F -32) K correct answer: C+273.15 density correct answer: mass/volume 1 mL correct answer: =1cm^3 = 1cc percent error correct answer: difference from known value/known value x 100 sig fig for Addition/Subtraction correct answer: answer has the same number of decimal places as the factor with the least amount of decimal places sig fig rules for multiplication/ division c...

chemical bond correct answer: the attractive forces that holds two atoms together in a more complex unit ionic bond correct answer: a chemical bond formed through the transfer of one or more electrons from one atom to another atom, metal and nonmetal ionic compound correct answer: a compound in which ionic bonds are present valence electrons are transferred from a metal to a nonmetal, solid at room temperature covalent bond correct answer: sharing of electrons, happens between two ...

The major products of carbohydrate digestion are... correct answer: monosaccharides A key organ in regulating blood glucose levels is the... correct answer: liver The normal blood sugar level, for an adult, measured after a fast of 8-12 hours is... correct answer: 70-110mg/100mL Blood Sugar... correct answer: is regulated by the liver which removes glucose from the blood in response to an increase after a meal. A blood sugar level that is lower than normal is referred to as... co...

The larger the number of people with a similar exposure to loss, the more predictable actual losses will be. correct answer: Law of Large Numbers Transfers the risk of loss from an individual or business entity to an insurance company correct answer: Insurance 1) Financial 2) Blood (relative) 3) Business correct answer: The three elements of insurable risk are The uncertainty or chance of a loss occurring correct answer: Risk 1) Pure risk 2) Speculative risk correct answer: Type...