Science Flashcard

Front

What is the smallest particle into which a pure substance can be broken down without changing its properties?

Back

Atom

Front

What best describes an element?

Back

A substance composed of atoms that are all the same

Front

What does the chemical formula H₂O represent?

Back

2 atoms of hydrogen and 1 atom of oxygen

Front

Which of the following is a compound? Gold (Au), Neon (Ne), Carbon dioxide (CO₂), Nitrogen (N₂)

Back

Carbon dioxide (CO₂)

Front

How does a compound differ from a mixture of its component elements?

Back

Compounds have different properties than their component elements

Front

What happens to the atoms in a compound during a chemical reaction?

Back

They rearrange to form new substances

Front

What is the difference between a monomer and a polymer?

Back

Polymers are made up of many monomers joined together

Front

How does the structure of graphite differ from that of diamond?

Back

Graphite atoms are arranged in sheets, while diamond atoms are tightly packed.

Front

Example of an extended structure rather than a molecule: Water (H₂O), Oxygen (O₂), Salt (NaCl), Carbon dioxide (CO₂)

Back

Salt (NaCl)

Front

How does adding thermal energy to a pure substance affect its particle motion?

Back

Particle motion increases