another science quiz

The process of a gas turning into a liquid

• Condensation

• Freezing

• Melting

• Boiling

What does the bottom left part of a periodic symbol represent?

• The number of electrons in an atom

• The number of protons in an atom

• The number of neutrons in an atom

• The number of protons, electrons and neutrons in an atom.

Which one is the reason that condensation occurs?

• Water molecules come close together to make a big water molecule

• It just appens

• Water vapor molecules touch a cold surface

• Water vapor molecules turning it self into water molecules

Which one has more kinetic energy than others?

• Gas

• Liquid

• Solid

Which part is a part that only plant cells have?

• Cell membrane

• Cell wall

• Nucleus

• Mitochondria

Air is made up of:

• 78% nitrogen & 21% oxygen 

• 87% nitrogen & 12% oxygen 

• 64% nitrogen & 33% oxygen 

• 33% nitrogen &64% oxygen 

What is a meniscus

• The lowest point on a water surface

• An organ

• A boiling point

• A life form

When a substance is heated, the particles vibrate more.

• True

• False