AP Biology Topic 2

Neutrons are

• negative
• positive
• neutral
• atoms

The positive particles of an atom are 

• electrons 
• atoms
• neutrons 
• protons 

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

• nucleus 
• electron cloud
• energy level 
• center 

Tags

NGSS.HS-PS1-8

Electrons are

• negative and in the nucleus
• positive and in energy leveles
• positive and in the nucleus
• negative and in energy levels

What is matter?

• any visible solid that has mass
• any liquid that takes up space and has mass
• anything that takes up space and has mass
• any liquid or solid that takes up space

What kind of chemical bond is formed when one atom gives electrons to another atom?

• magnetic
• ionic
• van der waahls
• covalent

A chemical bond that occurs when atoms share electrons is a(n) _______ bond.

• ionic
• covalent
• van der waals
• magnetic

Ionic, covalent, van der Waals forces 

• are types of atoms
• are compounds
• hold molecules and atoms together
• are of no consequence in life forms

Physical and chemical properties are different from the elements that make them up in

• mixtures
• compounds
• atoms

A number of elements have different number of neutrons, these elements are called

• compounds
• molecules
• isotopes
• atoms