Log in to make full use of the services
Which element has metallic bonds at room temperature?*
A solid sample of copper is an excellent conductor of electric current. Which type of chemical bonds are in the sample?*
The particle diagram below represents a solid sample of silver.
Which type of bonding is present when valence electrons move within the sample?*
What is the number of electrons shared between the atoms in an I2 molecule?*
What occurs when potassium reacts with chlorine to form potassium chloride?*
Which type of bonding is present in a sample of an element that is malleable?*
Which atoms will bond when valence electrons are transferred from one atom to the other?*
At STP, which substance has metallic bonding?*
Given the formula for hydrazine:
How many pairs of electrons are shared between the two nitrogen atoms?*
An ionic bond can be formed when one or more electrons are*
Which statement describes the energy and bonding changes as two atoms of fluorine become a molecule of fluorine?*
Given the equation representing a reaction:
H + H → H2
What occurs during this reaction?*
Base your answers to questions 13 on the information below and on your knowledge of chemistry.
Fatty acids, a class of compounds found in living things, are organic acids with long hydrocarbon chains. Linoleic acid, an unsaturated fatty acid, is essential for human skin flexibility and smoothness. The formula below represents a molecule of linoleic acid.
Identify the type of chemical bond between the oxygen atom and the hydrogen atom in the linoleic acid molecule.*
Base your answers to questions 14 on the information below and on your knowledge of chemistry.
The table below contains selected information about chlorine and two compounds containing chlorine. One piece of information is missing for each of the substances in the table.
Explain, in terms of electrons, why the compound containing calcium and chlorine is classified as an ionic compound.*
Base your answers to questions 15 on the information below and on your knowledge of chemistry.
The formula below represents a molecule of butanamide.
State the type of chemical bond between a hydrogen atom and the nitrogen atom in the molecule.*