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Ch. 1 Measurements in Chemistry
Ch. 2 Elements and Compounds
Ch. 3 Properties of Matter & Energy
Ch. 4 Periodic Table & Naming Compounds
Ch. 5 Chemical Reactions
100
It's a measure of how "right" a measurement is.
What is "accuracy"?
100
A substance composed of at least two types of atoms.
What is a compound?
100
Of the following, the one that's a chemical change: 1) boiling water, 2) breaking glass, 3) crushing rock, 4) making koolaid, or 5) burning gasoline.
What is 5) burning gasoline?
100
The halogen in the second period.
What is fluorine?
100
A special type of combination reaction in which oxygen is one of the reactants.
What is a combustion reaction?
200
The number of sig figs in 0.0070100.
What is 5?
200
One of the postulates of Dalton's Atomic Theory.
What is any one of: 1) Matter is composed of small, indivisible particles called atoms, 2) Atoms of the same element are identical and have the same properties, 3) Compounds are composed of atoms of different elements combined in simple, whole-number ratios, or 4) Chemical reactions are simply the rearrangement of atoms into different combinations.
200
The mass % of tin in a 50.0 g rock, if the mass of the tin is 3.0 g.
What is 6%?
200
The formula for barium oxide.
What is BaO?
200
One of the products of the dissolution (dissolving) of KF in water.
What is either of the potassium ion (K+) or fluoride (F-)?
300
The product of 1.2 cm and 3.90 cm, rounded to the proper sig figs and including the correct units.
What is 4.7 cm2?
300
The number of electrons in the calcium ion.
What is 18?
300
The volume of 5.25 grams of a substance if its density is 3.7 g/mL.
What is 1.4 mL? (ok 1.42)
300
The formula for iron (III) sulfate.
What is Fe2(SO4)3?
300
The precipitate, if any, you get when you add copper to a solution of silver nitrate.
What is silver chloride (or AgCl)?
400
0.000456 in scientific notation.
What is 4.56 * 10^-4?
400
The atomic mass of carbon if 80.0% is C-12 and the rest is C-13.
What is 12.2 (amu)?
400
The amount of heat required to raise the temperature of 40.0 grams of water 2.0 degrees C, where the specific heat of water is 4.184 J/g-C, with the right units and number of sig figs.
What is 40.0(2.0)(4.184) = 330J?
400
The chemical name of N4O
What is the formula of tetranitrogen monoxide?
400
The total ionic equation (excluding states) showing the reaction between mixtures of aqueous solutions of hydrochloric acid and sodium hydroxide, if any.
What is H+ + Cl- + Na+ + OH- = Na+ + Cl- + H2O?
500
The number of days in 45.2 seconds, rounded to the proper number of sig figs.
What is 5.23 * 10^-4 days?
500
One difference between a molecular and an ionic compound
What is any one of: 1) covalent vs. ionic bonds, 2) liquid/gas at room temp vs. solid, 3) low melting/boiling points vs. high, 4) molecules vs. formula units, and others.
500
The change in temperature if you apply 5.0 kJ heat to 3.75 grams of copper, if the specific heat of copper is 0.900 J/g-C.
What is 5000/3.75/.900 =1500 degrees C (2 sig figs)?
500
H2C2O4, named as an acid.
What is oxalic acid?
500
The net ionic equation (excluding states) showing the reaction between mixtures of aqueous solutions of copper (I) acetate and sodium carbonate, if any.
What is 2Cu+ + CO32- = Cu2CO3?