Chemical Bonding 2: Question Preview (ID: 23292)


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Atoms often join so that each atom will have
a) an even number of electrons b) an outermost energy level that is full of electrons c) an equal number of protons and electrons d) more electrons than either protons or neutrons
Polymers are large organic molecules that are made of
a) cations b) anions c) carbon and oxygen only d) repeating units
The simplest organic compound is
a) aspirin b) salt c) table sugar d) methane
Copper is a good conductor of electricity because its electrons
a) are positively charged b) can move from atom to atom c) have a 2- charge d) are repelled by protons
Covalent bonds are formed between
a) ions b) non metals c) metal atoms d) compounds
Gases take up a lot of space because gas molecules
a) have weak chemical bonds b) are not attracted to on another c) contain very few atoms d) have small molar mass
Each molecule of table sugar C12H22O11 contains
a) 1 atom of carbon b) 0 atoms of carbon c) 12 atoms of cabon d) 19 atoms of carbon
A polymer of sugar molecules is called a ?
a) carbohydrate b) amino acid c) DNA d) Protein
The forces that hold different atoms or ions together are ?
a) electric currents b) physical bonds c) chemical bonds d) nuclear forces
An oxidation number tells how many __________ an atom must gain, lose or share to become stable.
a) protons b) electrons c) neutrons d) supertrons
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