Biology review guide

Matter is anything that has ____ (or weight) and takes up ______.

• volume; density
• energy; time
• temperature; mass
• mass; space

What is the basic building block of matter?

• Molecule
• Cell
• Electron
• Atom

What is the charge of protons?

• negative

• positive

• neutral

what is the charge of electrons?

• negative

• positive

• neutral

• +1 elementary charge

Tags

NGSS.HS-PS2-5

what is the charge neutrons?

• positive

• negative

• neutral

What two subatomic particles are found in the nucleus?

• Electrons and positrons
• Quarks and leptons
• Photons and neutrinos
• Protons and neutrons

Tags

NGSS.HS-PS1-8

Where can electrons be found in the atom?

• In the electron cloud around the nucleus.
• Floating freely in space.
• In the protons and neutrons.
• In the nucleus of the atom.

atomic mass can be found by adding up which two subatomic particles?

• protons and neutrons
• quarks and leptons
• neutrons and electrons
• electrons and protons

The number of ______always equals the number of _______in a neutral atom.

• neutrons; protons
• protons; neutrons
• protons; electrons
• electrons; neutrons

Tags

NGSS.HS-PS1-7

How many neutrons does boron have?

• 7
• 6
• 4
• 5