Memorize!
What is the element with the formula: Tc?
Technetium
Al2S3
Aluminum Sulfide
Define: Matter
Anything that has mass and takes up volume.
a neutral element, arsenic-75, has how many neutrons, protons and electrons?
42 neutrons, 33 protons and 33 electrons.
Does liquid have a fixed or indefinite volume? Does it have a fixed or indefinite shape?
Fixed Volume
Indefinite Shape
Group 7 of the Periodic Table of Elements
Halogens
Chromium (III) Oxide
Cr2O3
Define: Deposition
Phase change from a gas to a solid
Manganese has a mass number of 55; how many neutrons does it have?
Denser objects have _______ (more / less) volume per unit mass.
Less
What is the Formula and charge of Ammonia?
NH4+
Tin (IV) Sulfate
Sn(SO4)2
What is the difference between and Ion and an Isotope?
Ion- when an atom gains or loses electrons.
Isotope- atoms of the same type but with a different number of neutrons
For the reaction: CaCO3 (s) + 2HCl (aq) -> CaCl2 (aq) + CO2 (g) + H2O (l)
68.1 g solid CaCO3 is mixed with 51.6 g HCl. What number of grams of CO2 will be produced?
29.9 g CO2
What is the difference between accuracy and precision?
accuracy- how close a measurement is to true value
precision- how close repeated trials of measurements are to each other
Name the 7 diatomic molecules
Br, I, N, Cl, H, O, F
A compound is ionic if, in the formula or compound name, there is:
1.
2.
3.
4.
1. Metal
2. Polyatomic Ion
3. Parenthesis
4. Roman Numeral
What is the phase change called that goes from solid to gas? Is it an exothermic reaction or an endothermic reaction?
sublimation, endothermic
For the reaction of C2H4 (g) with O2 (g) to form CO2 (g) and H2O (g), what quantity of CO2, in grams, could be produced from 2.0 g of C2H4 and 5.0 g of O2?
4.6 grams of CO2
Empirical Formulas belong to which group of compounds? Ionic? Covalent? Both?
Covalent.
Ionic Subscripts are specific to the ion at play, so they cannot be simplified.
List 3 Strong Acids and 1 Strong Base
Strong Acids:
Hydrochloric Acid (HCl), Hydrobromic Acid (HBr, Hydriodic Acid (HI), Nitric Acid (HNO3), Sulfuric Acid (H2SO4)
Strong Bases:
Lithium Hydroxide (LiOH), Sodium Hydroxide (NaOH), Potassium Hydroxide (KOH), Rubidium Hydroxide (RbOH), Calcium Hydroxide (Ca(OH)2), Strontium Hydroxide (Sr(OH)2), Barium Hydroxide (Ba(OH)2)
There are 3 ways to name a diatomic molecule...what are they?
Ex: Cl
•Chlorine
•Dichlorine
•Diatomic Chlorine
Define: Intensive Property
A property that does not depend on the amount of matter that is present in an element or compound.
Ex: temperature, color, density.
What volume of 0.120 M NaOH solution is required to react completely with 40.0 mL of 0.200 M H2SO4 solution?
66.7 mL
Use the two solutions equation: M1V1 = M2V2
Fe (3+) + V (2+) -> Fe (2+) + V (3+)
Identify:•oxidizing agent
•reducing agent
•reactant oxidized
•reactant reduced
Oxidized: V
Reduced: Fe