Biology Unit 2 test

How many elements have been cataloged in the periodic table of elements?

• 92

• 118

• 150

• 104

What three particles are atoms made of?

• Protons, Neutrons, Electrons

• Protons, Neutrons, Photons

• Electrons, Photons, Neutrons

• Protons, Electrons, Quarks

What does it mean to say that a particle is "subatomic"?

• It is larger than an atom

• It is smaller than an atom

• It is the same size as an atom

• It is not part of an atom

Tags

NGSS.HS-PS1-8

What do protons and electrons contain that a neutron does not?

• Charge

• Mass

• Energy

• Volume

Tags

NGSS.HS-PS1-8

What is the reason for the small number of electrons in the shell closest to the nucleus?

• Limited space

• High energy

• Low energy

• High charge

Why does an atom bond?

• To increase its mass

• To become more stable

• To decrease its volume

• To increase its charge

Tags

NGSS.HS-PS1-1

What occurs in a covalent bond?

• Electrons are transferred

• Electrons are shared

• Protons are shared

• Neutrons are transferred

Tags

NGSS.HS-PS1-1

What is the difference between an atom and a molecule?

• An atom is larger than a molecule

• A molecule is a group of atoms bonded together

• An atom is a group of molecules bonded together

• A molecule is smaller than an atom

Tags

NGSS.MS-PS1-1

What is the difference between a solid and a gas?

• In solids atoms are tightly packed, In gases atoms are farther apart

• Gases have a fixed shape, solids do not

• Solids have no volume, gases do

• Gases have a fixed volume, solids do not

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is water composed of?

• Hydrogen and oxygen

• Carbon and oxygen

• Nitrogen and hydrogen

• Helium and oxygen

Tags

NGSS.HS-ESS2-5