Biology 6.1 Vocab

_______ are the building blocks of matter.

• compounds

• atoms

• ionic bonds

• ions

Neutrons and ______ are in the center of an atom.

• Electrons

• Elements

• Atoms

• Protons

Protons are ______ charged.

• Negative

• Neutral

• Positive

• Not Charged

______ of an element are identified by adding the protons and neutrons in the nucleus.

• Isotopes

• Compounds

• Electrons

• Molecules

______ are particles that have no charge.

• Protons

• Electrons

• Ions

• Neutrons

A ______ is a pure substance formed when two or more different elements combine.

• Compound

• Isotope

• Chemical Bond

• Ionic Bond

The chemical bond that forms when electrons are shared is called______

• Covalent Bond

• Molecule

• Ion

• Ionic Bond

A _______ is the process by which atoms or groups of atoms in substances are reorganized into different substances.

• Activation Energy

• Chemical Reaction

• Active Site

• Catalyst

A ______ is a substance that lowers the activations energy needed to start chemical reaction.

• Base

• Active Site

• Catalyst

• Hydrogen Bond

______ are mixtures with acids or bases to keep the ph within a particular range.

• Acids

• Buffers

• Bases

• Solutes