Molecules in the Human Body

Can you name a molecule used by or found in the human body?

• Water

• Plastic

• Glass

• Metal

What is meant by the term “organic” molecule?

• Contains carbon

• Contains metal

• Contains water

• Contains salt

Which element is present at 0.2% in the human body?

• Sodium

• Chlorine

• Magnesium

• Phosphorus

Which of the following is a trace element in the human body?

• Oxygen

• Carbon

• Zinc

• Hydrogen

Which subatomic particle is positively charged?

• Electron

• Neutron

• Proton

• Neutrino

Which particle is responsible for the negative charge in an atom?

• Proton

• Neutron

• Electron

• Photon

What is the periodic table used for?

• Organizing chemical reactions

• Organizing elements

• Organizing compounds

• Organizing mixtures

Which of the following is NOT a category used in the periodic table?

• Solids

• Liquids

• Gases

• Textures

What is the atomic weight of Helium as shown in the diagram?

• 1.008

• 4.002602

• 6.941

• 12.011

Which of the following is true about atomic weight?

• It is the same as the atomic number

• It is the weight of the protons only

• It includes the weight of protons, neutrons, and a little from electrons

• It is the weight of the electrons only