Unit 3 IPC Chemical Reactions

Front

How many valence electrons does Phosphorus (P) have?

Back

5

Front

Is the reaction 2KNO3 (s) + energy --> 2KNO2 (s) + O2 endothermic or exothermic?

Back

Endothermic

Front

Fizzing, foaming, and burning are examples of what type of change?

Back

Chemical change

Front

Is the equation N2 + 3 H2 --> 2NH3 balanced or unbalanced?

Back

Balanced

Front

When a substance changes from a solid to a liquid, what type of change is it?

Back

Endothermic Change

Front

What is a chemical reaction?

Back

A process that leads to the transformation of one set of chemical substances to another.

Front

What is the law of conservation of mass?

Back

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

Front

What is an exothermic reaction?

Back

A reaction that releases energy, usually in the form of heat.

Front

What is an endothermic reaction?

Back

A reaction that absorbs energy from its surroundings.

Front

What are reactants in a chemical reaction?

Back

Substances that undergo change during a chemical reaction.