BIO Unit II SG pt 1

Q1 Which is the best definition for chemistry?

• the science of mixtures and compounds
• the study of the composition and properties of matter and the energy transformations that accompany changes in the basic structure of matter.
• the science of elements and their subatomic particles
• the science of energy and their transformations

Q2 What are the two basic components of the physical world?

• elements and atoms
• states and matter
• energy and matter
• molecules and compounds

Q3 What are the three states of matter?

• protons, neutrons, electrons
• atoms, molecules, compounds
• liquid, solid, gas
• kinetic, potential, activation

Q4 What is the term that describes the basic building blocks of matter? It is the smallest unit of an element.

• atom
• proton
• monomer
• molecule

Q4 What do you call a collection of atoms that all have the same number of protons?

• nuclei
• compounds
• molecules
• element

Q5 What do you call the central area of the atom where the protons and neutrons are located?

• nucleus
• orbital
• shell
• home

Q5 What subatomic particle is located in the nucleus and has a positive charge?

• neutron
• proton
• electron

Q5 What subatomic particle orbits the nucleus and has a negative charge?

• neutron
• proton
• electron

Q5 What subatomic particle is located in the nucleus and has no charge?

• neutron
• proton
• electron

Q6 What information is given by the atomic number?

• number of electrons
• number of neutrons
• number of protons