Chemical Reactions Test

Front

What are valence electrons?

Back

Valence electrons are the electrons in the outermost shell of an atom that are involved in forming bonds with other atoms.

Front

How many valence electrons does potassium (K) have?

Back

1

Front

How many valence electrons does bromine (Br) have?

Back

7

Front

What type of chemical reaction is represented by the equation: AB --> A + B?

Back

Decomposition reaction.

Front

Back

24

Front

How many valence electrons does phosphorus (P) have?

Back

5

Front

What is a synthesis reaction?

Back

A synthesis reaction is a type of chemical reaction where two or more simple substances combine to form a more complex product.

Front

What is a single replacement reaction?

Back

A single replacement reaction is a type of chemical reaction where one element replaces another in a compound.

Front

What is a double replacement reaction?

Back

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

Front

What is combustion?

Back

Combustion is a chemical reaction that occurs when a substance reacts rapidly with oxygen, producing heat and light.