Unit 3 Unit Test Chemical Bonds, Etc

Consider this hydrocarbo Is this an aromatic hydrocarbon? Why or why not?

Which is composed of alkenes?

Which molecule has a structure that is most like aspirin?

The compound below is estradiol, a hormone that triggers the development of female secondary sex characteristics. Estradiol is best described as which of the following? an alkyne an alkene an alkane an aromatic

What is the name of this hydrocarbon? (hint: count the Carbons)

Which activity most likely involves the direct use of saturated hydrocarbons? burning natural gas dissolving salt in water carving stone with hammer and chisel bending steel by hand

What is the name of the hydrocarbon CH3(CH2)6CH3? butane decane octane propane

What is the name of this hydrocarbon? 1-methylbutane 2-methylbutane 2-methylpropane 3-methylpropane

Which is the correct name of a compound that is formed by Si and O? silicon dioxide silicon trioxygen disilicon dioxygen monosilicon oxide

Which formula represents the compound commonly known as phosphine? PH PH2 PH3 PH4

In water, HNO3 produces H+ ions. Which is the name for HNO3 in an aqueous solution? hydrogen nitrate nitric acid saltpetre nitrous acid

Which statement describes covalent bases? They have hydroxide ions. They produce hydrogen ions. They are often amines. They are named the same as ionic compounds.

What is the ratio of Almc005-1.jpg ions to Smc005-2.jpg ions in a neutral compound? 1:1 2:1 2:3 3:2

What is the name of the ionic compound CaO? calcium oxygen calcium oxide calcium(I) oxide calcium(II) oxide

What is the chemical formula for zinc phosphate?

Which statement describes how the binary ionic compound KBr is named? The nonmetal is named first, and the name is unchanged. The metal is named first, and the name is unchanged. The nonmetal is named second, and the name is unchanged. The metal is named second, and the name is unchanged.

Among the intermolecular forces, which forces are typically the weakest? dipole-dipole interactions hydrogen bonds dipole-induced dipole interactions London dispersion forces

The diagram below shows DNA molecules. What do the broken lines connected to hydrogen atoms represent in this diagram? the weakest intermolecular forces the weakest intramolecular forces the strongest intermolecular forces the strongest intramolecular forces

When applied to a dish, soap makes grease soluble in water. Which explanation correctly supports the role of intermolecular forces in this common observation? The nonpolar end of a soap molecule attaches itself to grease. The nonpolar end of a soap molecule attaches itself to water. The polar soap molecule attaches itself to the dish. The polar soap molecule attaches itself to a nonpolar soap molecule.

Which statement best describes London dispersion forces? repulsive intramolecular forces attractive intramolecular forces repulsive intermolecular forces attractive intermolecular forces

Which statement best describes the effect of low ionization energies and low electronegativities on metallic bonding? The valence electrons are easily delocalized. The valence electrons stay in a single orbital. The valence electrons break free of the crystals. The valence electrons move closer to the nuclei.

Which reason best explains why metals are shiny? because their valence electrons reflect light because their valence electrons absorb light because their valence electrons oscillate between bands because their valence electrons move to higher energy levels

Which element is likely to be the most brittle? selenium cobalt platinum zinc

Which statement best describes the properties of metals? They are shiny and bend without breaking. They are dull and are good electrical insulators. They conduct electricity well and are brittle. They can be flattened and do not conduct heat well.

An element has six valence electrons available for bonding. Which group of the periodic table does this element most likely belong to? group 2 group 4 group 16 group 18

Which is the Lewis structure for H3PO4?

Lewis structures cannot show the number of valence electrons. show the location of bonds. show the strength of bonds. show how many bonds are present in a molecule.

Based on its location in the periodic table, what can most likely be predicted about phosphorus? It has three valence electrons available for bonding. It has three nonbonding electrons. It has five valence electrons available for bonding. It has five nonbonding electrons.

Which statement is true about ionic compounds? Solid ionic compounds are good conductors of electricity. Ionic compounds have varying solubilities in water. Ionic compounds have very low melting points. Ionic compounds are very easy to bend.

Which compound has the highest melting point? Al2(CO3)3 C12H22O11 C8H18 H2O

Which of the following compounds would be expected to have the strongest ionic bonds? the compound that has the largest ions with the greatest charge the compound that has the largest ions with the least charge the compound that has the smallest ions with the greatest charge the compound that has the smallest ions with the least charge

How do ionic bonds affect the properties of ionic compounds? The bonds weakly hold ions together, increasing the melting point. The bonds strongly hold ions together, reducing the boiling point. The bonds prevent ions from moving throughout the crystal, so a solid ionic compound is a poor conductor. The bonds prevent electrons from moving throughout the crystal, so a solid ionic compound is a poor conductor.