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- 1. Multiple Choice
Alkaline earth metals are NOT found in their free state in nature. Their electron configurations contain two outer electrons. Because they easily give up these two outer electrons, what type of bond do they typically form?
covalent
hydrogen
ionic
metallic
- 2. Multiple Choice
What is the chemical formula for ammonium hydroxide? Use your reference tables!
NH3OH
NH4OH
NH3(OH)3
NHOH3
- 3. Multiple Choice
The alkali metal family of elements includes Li, Na, K, and Rb. These elements tend to easily form compounds with the halogens F, Cl, Br, and I. Which explains why they form compounds so easily?
They have the same electron configuration as the halogens.
They have one electron in their outer orbital which they readily lose.
They have seven electrons in their outer orbital which they readily lose.
They have one electron in their outer orbital which attracts the protons in the halogen atoms.
- 4. Multiple Choice
Based on its electron configuration, which element will MOST likely gain electrons from another element when forming an ionic compound?
potassium (K)
vanadium (V)
iodine (I)
xenon (Xe)
- 5. Multiple Choice
Compared with compounds such as sodium chloride, the wax produced by bees has a low boiling point. Which BEST explains this property of beeswax?
It is a solid at room temperature.
It has a crystalline ionic structure.
It is composed of more than one element.
It is made from covalently bonded compounds.
- 6. Multiple Choice
Sodium (Na) forms an ionic bond with Fluorine (F) to produce sodium fluoride (NaF). Which of these elements would bond similarly with sodium?
potassium (K)
magnesium (Mg)
oxygen (O)
chlorine (Cl)
- 7. Multiple Choice
Compounds can be classified as covalent or ionic by noting the location on the periodic table for each atom in the compound. Which compound is covalently bonded?
sodium chloride (NaCl)
sulfur dioxide (SO2)
potassium bromide (KBr)
magnesium chloride (MgCl2)
- 8. Multiple Choice
Nitrogen has five valence electrons. For this reason, it often bonds to gain three electrons. Based on the arrangement of the elements in the periodic table, which other element MOST likely shows similar behavior?
neon
carbon
oxygen
phosphorus
- 9. Multiple Choice
Elements with the same valence electron configuration can be expected to have similar
atomic mass.
chemical reactivity.
numbers of protons.
numbers of electrons.
- 10. Multiple Choice
The element cesium, Cs, is an alkali metal. Which chemical formula represents a cesium compound that is likely to exist?
CsCl
CsCl2
CsO
CsO2
- 11. Multiple Choice
The tendency of an element to react chemically is closely related to
the number of valence electrons.
the ratio of protons to neutrons.
how tightly atoms are packed.
the number of neutrons in atoms.
- 12. Multiple Choice
Which element is MOST likely to form an ion with a negative 2 charge?
oxygen
nitrogen
beryllium
magnesium
- 13. Multiple Choice
The noble gases, helium, neon, argon, krypton, xenon, and radon, rarely react with other elements because they
are low-density gases.
are not abundant on Earth.
have complete outermost energy levels.
have two electrons in their outermost energy level.
- 14. Multiple Choice
Metal atoms will MOST likely form ions by the
loss of electrons.
loss of protons.
gain of electrons.
gain of protons.
- 15. Multiple Choice
The chemical formula for water is H2O What does the formula show about each element in the compound?
the number of valence electrons
the charge of the compound
the mass of protons in each atom
the number of atoms of each element
- 16. Multiple Choice
Which compound results from covalent bonding?
NH4Cl
K2SO4
NaCl
C6H12O6
- 17. Multiple Choice
Atoms of which two elements will form an ionic bond?
Mg and Cl
N and O
Fe and Co
Rb and Al
- 18. Multiple Choice
Which compound will most likely be formed when lithium (Li) and nitrogen (N) are chemically combined?
LiN
Li3N
LiN3
Li3N3
- 19. Multiple Choice
Which type of chemical bond accounts for the high electrical conductivity in a bar of pure silver (Ag)?
metallic
ionic
covalent
hydrogen
- 20. Multiple Choice
In the compound MgCl2, the subscript 2 indicates that
the chloride ion is twice the size of the magnesium ion.
there are two chloride ions for each magnesium ion.
there are two magnesium ions for each ion of chlorine.
magnesium and chlorine form a double covalent bond.
- 21. Multiple Choice
Which is the best description for the bonds that are formed in carbon dioxide (CO2)?
Valence electrons are shared between carbon atoms and oxygen atoms.
Oxygen loses electrons, and carbon gains electrons.
Carbon loses electrons, and oxygen gains electrons.
- 22. Multiple Choice
Which of the following formulas is the correct way to write iron(III) phosphate?
FePO4
FeP
Fe3PO4
Fe3(PO4)3
- 23. Multiple Choice
The name copper(II) indicates that a compound contains
two types of copper ions.
copper ions with a 2+ charge.
copper ions with a 11+ charge.
copper ions with a negative charge.
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