Chemical Reactions - BasicsC

Front

What is an exothermic reaction?

Back

A chemical reaction that releases energy in the form of heat, causing the surrounding matter to become warmer.

Front

What is an endothermic reaction?

Back

A chemical reaction that absorbs energy from its surroundings, causing the surrounding matter to become cooler.

Front

True or False: A change in smell or texture is a sign of a chemical reaction.

Back

True

Front

In an endothermic reaction, where does the energy go?

Back

Inside the atoms.

Front

What is a sign that a chemical reaction has occurred?

Back

Signs include changes in color, temperature, smell, or the formation of gas or precipitate.

Front

What happens to energy in an exothermic reaction?

Back

Energy is released into the surroundings.

Front

What is a chemical reaction?

Back

A process where substances (reactants) are transformed into new substances (products) with different properties.

Front

What is a reactant?

Back

A substance that undergoes change in a chemical reaction.

Front

What is a product?

Back

A substance that is formed as a result of a chemical reaction.

Front

What is the law of conservation of mass?

Back

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