Chemical Changes and Reactions Flashcard

Front

What is the chemical formula for carbon dioxide?

Back

CO₂

Front

How can you identify a chemical reaction?

Back

A precipitate is formed, Bubbles of gas are given off, A color change occurs, All of these

Front

What is a precipitate?

Back

An insoluble product formed in a reaction

Front

What do antacids contain to neutralise stomach acid?

Back

Alkali

Front

What pH level is needed to neutralise a bee sting with a pH of 2?

Back

pH 12

Front

What is a chemical change?

Back

A process where substances transform into different substances with new properties.

Front

What is the law of conservation of mass?

Back

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

Front

What is an example of a chemical reaction?

Back

Burning wood, rusting iron, or baking a cake.

Front

What is an acid?

Back

A substance that donates protons (H⁺ ions) in a solution.

Front

What is a base?

Back

A substance that accepts protons (H⁺ ions) in a solution.