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Ch 16 test study guide
Terms in this set (33)
Which of the following is true for valence electrons?
Valence electrons may be lost or gained by an atom when bonding occurs with another atom.
When an atom gains or loses electrons, it has an electrical charge. It is known as:
Transferring or sharing electrons between atoms forms:
Groups of atoms held together by chemical bonds are called:
Bonding between atoms produces an outermost energy level for each atom filled with:
Sodium forms an ionic bond with chlorine when sodium ____ an electron and chlorine ____ an electron.
Chemical formulas represent the number and element of each type of atom in:
both ionic and covalent compounds.
How many atoms of aluminum (Al), sulfur (S), and oxygen (O) are in each molecule of Al2(SO4)3?
2-aluminum, 3-sulfur, 12-oxygen
Ionic bonds form:
between oppositely charged atoms.
The Mg atom becomes the ion, Mg2+, when it:
loses 2 electrons.
The number of valence electrons in the atom pictured is:
Atoms of elements in period 2 and period 3 are similar because the largest number of valence electrons their atoms may contain in the outermost energy level is:
The largest number of valence electrons an atom in the first period can have is:
The diagram that best represents the Lewis dot diagram of a chlorine atom is:
The number of valence electrons in an atom of aluminum, atomic number 13, is:
Elements in the first column of the periodic table are known as alkali metals. These elements, when ionized, have in common:
The oxidation number for halogens is:
Which statement is TRUE about elements in group 16?
They have an oxidation number of 2-.
The atom of the element most likely to bond with a single atom of fluorine, atomic number 9, is:
lithium, atomic number 3
An ionic bond is most likely to form between:
lithium and fluorine atoms.
What is the chemical formula for a compound that contains the aluminum ion (Al3+) and the hydroxide ion (OH-)?
A molecule of water, formed when two hydrogen atoms (oxidation number 1+) and one oxygen atom (oxidation number 2-) bond, has an oxidation number of:
What would the chemical formula be for a molecule made up of potassium (K1+) and oxygen (O 2-)?
Predict the formula for lithium oxide.
What type of compound is lithium oxide?
The most common oxidation number for an element with 16 electrons is:
Which of the following is NOT a carbon compound found in living things?
What do organic chemists study?
What is the function of lipids in plants and animals?
Storage of energy in reserve for long periods.
Digestion breaks down proteins into:
Carbon's importance is life is due to its:
All of these
Which are the four bases found in DNA?
Adenine, Thymine, Guanine, Cytosine
The compound CaCl2 contains which of the following ions?
Ca2+ and Cl-
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