review for chapter 2 bio

all matter is made of what 

• energy 
• atoms 
• electrons 
• compounds 

The positive particles of an atom are 

• electrons 
• positrons 
• neutrons 
• protons 

the central region of an atom where its neutrons and protons are is its 

• nucleus 
• electron cloud
• core 
• center 

Particles in an atom that are neutral and have no charge are 

• negatrons 
• electrons 
• neutrons 
• protons 

What are the 3 particles that make-up the atom?

• protons, neutrons, and isotopes
• neutrons, isotopes, and electrons
• positives, negatives, and electrons
• protons, neutrons, and electrons

Which particles are found in an atom's nucleus?

• Protons
• Neutrons
• Electrons
• Both protons and neutrons

In a neutral atom, the protons are always equal to the number of...

• electrons
• neutrons

Compound that produces hydroxide ions (OH-) in solution;

solution with a pH of more than 7

• acid

• base

• buffer

• molecule

Weak attraction between a hydrogen atom and another atom

• compound

• ionic bond

• covalent bond

• hydrogen bond

Scale with values from 0 to 14, used to measure the concentration of H+ ions in a solution; a pH of 0 to 7 is acidic, a pH of 7 is neutral and a pH of 7-14 is basic

• van der walls forces

• pH scale

• acid

• base