Biochemistry Review

Define Biochemistry

• study looking at animals to study their habitat.

• study of jewels in a cave.

• study of finding where all research lives.

• study of the chemical substances & processes occurring in living organisms.

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NGSS.HS-LS1-1

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The electrons of an atom

• are found in the nucleus along with the protons.

• occupy the space surrounding the nucleus.

• have a positive charge.

• are attached to the positive charge of neutrons.

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NGSS.MS-PS1-1

An atom is the…

• smallest particle of an element

• negatively charged

• positively charged

• the average atomic mass

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NGSS.MS-PS1-1

The nucleus of an atom consists of?

• electrons and neutrons

• electrons and protons

• protons and neutrons

• electrons

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NGSS.MS-PS1-1

Which particle of an atom has an AMU of 0?

• proton

• neutron

• electron

How many protons are in this atom?

• 20.18

• 20

• 10

• 40

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NGSS.MS-PS1-1

What is the atomic number of this atom?

• 9

• 5

• 4

• 13

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NGSS.MS-PS1-1

A charged atom is known as a/an

• isotope

• neutral atom

• ion

• nucleus

What is a helium atom made of?

• 1 proton, 3 neutrons, 2 electrons

• 1 proton, 3 neutrons, 3 electrons

• 1 proton, 1 neutron, 1 electron

• 2 protons, 2 neutrons, 2 electrons

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NGSS.MS-PS1-1

Is MgCl₂ an ionic or covalent compound?

• Ionic

• Covalent