Chemistry 1, S1 3-6

Front

What type of reaction is represented by the equation: Li₂O + H₂O → LiOH?

Back

Synthesis reaction: A reaction where two or more reactants combine to form a single product.

Front

What is the formula for the compound formed by Fe+3 and CO₃-2 ions?

Back

Fe₂(CO₃)₃: This is the formula for iron(III) carbonate.

Front

What is the total number of electrons in an atom with the electron configuration 1s² 2s² 2p⁶?

Back

10 electrons: The sum of the superscripts in the electron configuration gives the total number of electrons.

Front

What does an element's atomic number represent?

Back

The number of protons: An element will always have the same number of protons, which defines the element.

Front

What is the name of the compound N₂O₃?

Back

Dinitrogen trioxide: The systematic name for the compound with two nitrogen and three oxygen atoms.

Front

What is a decomposition reaction?

Back

A reaction where a single compound breaks down into two or more simpler products.

Front

Define a double replacement reaction.

Back

A reaction where two compounds exchange ions or bonds to form two new compounds.

Front

What is the significance of the octet rule in chemistry?

Back

Atoms tend to bond in such a way that they have eight electrons in their valence shell, achieving stability.

Front

What is the difference between ionic and covalent bonds?

Back

Ionic bonds involve the transfer of electrons from one atom to another, while covalent bonds involve the sharing of electrons.

Front

What is the formula for calculating the molar mass of a compound?

Back

Add the atomic masses of all atoms in the compound's formula.