The Chemistry of Life Part1

What is everything made of?

• Atoms

• Molecules

• Cells

• Energy

What is matter made of?

• Cells

• Atoms

• Molecules

• Energy

How many protons does a hydrogen atom have?

• 2

• 1

• 0

• 3

How many electrons does an oxygen atom have?

• 6

• 7

• 8

• 9

What are the three basic particles that compose an atom?

• Protons, Neutrons, and Electrons

• Protons, Neutrons, and Photons

• Electrons, Photons, and Neutrons

• Protons, Photons, and Electrons

Which particle in an atom is positively charged?

• Neutron

• Electron

• Proton

• Photon

Where are electrons located in an atom?

• In the nucleus

• In clouds around the nucleus

• In the center of the nucleus

• In the outer shell only

What is the charge of a neutron?

• Positive

• Negative

• Neutral

• Variable

What are elements in terms of their chemical properties?

• Compounds that can be broken down by chemical means

• Basic building blocks of matter that cannot be broken down by chemical means

• Mixtures of different substances

• Molecules that can be easily separated

How is the atomic number of an element defined?

• The number of electrons in the nucleus

• The number of neutrons in the nucleus

• The number of protons in the nucleus

• The total mass of the atom