Chemical Reactions Flashcard

Front

What is the correct formula of potassium hydride?

Back

KH

Front

Which equation represents a double replacement reaction?

Back

LiOH + HCl → LiCl + H₂O

Front

Given the incomplete equation: 4Fe + 3O₂ → 2X. Which compound is represented by X?

Back

Fe₂O₃

Front

Which represents the greatest mass of chlorine?

Back

1 mole of chlorine

Front

The total number of sodium atoms in 46.0 grams of sodium is?

Back

12.0 x 10²³

Front

What is a chemical reaction?

Back

A process that involves the rearrangement of the molecular or ionic structure of a substance.

Front

Define a mole in chemistry.

Back

A mole is a unit that measures the amount of a substance, defined as exactly 6.022 x 10²³ particles.

Front

What is a double replacement reaction?

Back

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

Front

What is the law of conservation of mass?

Back

In a chemical reaction, mass is neither created nor destroyed; it is conserved.

Front

What is the difference between an atom and a molecule?

Back

An atom is the smallest unit of an element, while a molecule is a group of two or more atoms bonded together.