Quiz Review Ionic Bonding Periodic Trends Formula Writing and Naming
During a lab experiment you mixed together two different solutions and observed whether or not a precipitate formed. A precipitate is defined as a. any liquid mixture b. The liquid part of a chemical reaction c. A clear solution d. A solid that forms and separates from a liquid mixture.
All atoms on the periodic table desire to become like the noble gases. Why? a.Noblegases have a full outermost energy level. b.Noblegases bond easily with other elements. c.Noblegases make really neat explosions. d.Noblegases have 7 valence electrons.
Which statement about the alkali metals is correct? a.They are located in the left-most column on the periodic table. b.They are extremely nonreactive. c.They are usually gases. d.They form negative ions with a -1 charge.
Most halogens form compounds by a.gaining an electron to form a negative ion. b.losing an electron to form a positive ion. c.losing protons. d.losing neutrons.
Which element is more reactive, potassium or sodium? a.Potassium - It gains electrons easily because of its atomic radius. b.Potassium - It loses electrons easily because of its atomic radius. c.Sodium - It gains electrons easily because of its atomic radius. d.Sodium - It loses electrons easily because of its atomic radius.
Which element is more reactive, fluorine or iodine? a.Fluorine - It loses electrons easily because of its mass. b.Fluorine - It gains electrons easily because of its mass. c.Iodine - It loses electrons easily because of its mass. d.Iodine - It gains electrons easily because of its mass.
In a chemical formula, the number of atoms in the compound is shown by the a.oxidation number b.coefficient c.superscript d.subscript
In a chemical formula, the number of molecules in the compound is shown by the a.oxidation number b.coefficient c.superscript d.subscript
How many electrons are needed in the outer energy levels of most atoms for the atom to be chemically stable? a.2 b.6 c.4 d.8
What kind of chemical bond is formed when electrons are transferred from one atom to another? a.ionic b.metallic c.covalent d.hydrogen
What is the total number of atoms in the compound Ca(ClO3)2? a.2 b.6 c.3 d.9
How many total hydrogen atoms are present in one molecule of ammonium acetate NH4C2H3O2? a.3 b.7 c.4 d.11
7 ammonium acetate NH4C2H3O2
An atom that has an electrical charge is called a/an a.element b.isotope c.ion d.molecule
When an atom loses electrons, the atom gains a ________charge. a.positive b.negative
When an atom gains an electron, the atom gains a _________ charge. a.positive b.negative
A molecule that shares electrons unevenly between the atoms is called a.nonpolar b.ionic c.polar d.neutral
The order of atoms on the periodic table is based on a.the number of protons in the nucleus b.the number of neutrons in the nucleus c.the electric charge of the nucleus d.atomic mass
Atoms of elements in the same group have the same number of a.protons b.valence electrons c.neutrons d.protons and neutrons
Alkali metals are extremely reactive because they a.have very small atomic masses b.are not solids at room temperature c.have one valence electron that is easily lost to form a positive ion. d.have two valence electrons that form compounds with calcium and magnesium
have one valence electron that is easily lost to form a positive ion.
The electrons in a nonpolar covalent bond are a. gained b. shared equally c. lost d. shared unequally
The formula for magnesium nitrate is a. MgNO3 b. Mg(NO3)2 c. Mg2NO3 d. Mg2(NO3)3
How many electrons are gained/lost by magnesium and what is the charge of the ion that it forms? • Loses 2 electrons to form a magnesium ion with a -2 charge. • Gains 2 electrons to from a magnesium ion with a -2 charge. • Loses 2 electrons to form a magnesium ion with a +2 charge. • Gains 2 electrons to form a magnesium ion with a +2 charge.
What ions make up the compound FeCl3? a.1Fe 3+ ion and 1Cl- ion b.1Fe3+ ion and 3 Cl- ions c.1Fe2+ ionic and 3Cl- ions d.3Fe3+ ions and 1Cl- ion
Which element has the largest atomic radius? a.Aluminum b.Sulfur c.Silicon d.Chlorine e.Phosphorus
Water is considered a polar molecule because • the molecule has a net positive charge b. the molecule has a net negative charge c. the molecule has a net zero charge d. the ends of the molecule have partial negative and positive charges