Biochemistry Vocab Preview

The middle of the atom, which contains protons and neutrons, is called _____

• the shell
• the nucleus
• the cell
• the control center

The positive particles of an atom are 

• electrons 
• positrons 
• neutrons 
• protons 

These particles orbit around the nucleus of an atom.  What are they called?

• electrons
• protons
• neutrons
• photons

Tags

NGSS.HS-PS1-1

Ions are: 

• atoms with a positive or negative charge
• atoms with no charge
• atoms with ONLY a positive charge
• atoms with ONLY a negative charge

Another name for catalyst

• energy
• process
• product
• enzyme

The building block of all non-living matter

• atoms
• cells
• organelles

A pure substance made up of one kind of atom.

• Molecule
• Compound
• Plasma
• Element

A substance made up of two or more different elements in a fixed ratio.

• Compound
• Molecule
• Chemical reaction
• Matter

An atom that has a positive or negative charge.

• Ion
• Isotope
• Chemical bond
• Molecule

What is the activation energy?

• The energy of the products
• The energy of the reactants
• The minimum energy needed by the reactants to form the products.
• The energy lost in the reaction

Tags

NGSS.HS-PS1-4