Cengage Advantage Books: Sustaining the Earth 10th Edition by Tyler Miller,Scott Spoolman

تمرين 20

What is matter ? Distinguish between an element and a compound and give an example of each. Distinguish among an atom, an ion, and a molecule and give an example of each. What is the atomic theory ? Distinguish among a proton (p) , a neutron (n) , and an electron (e). What is the nucleus of an atom? Define and distinguish between the atomic number and the mass number of an element. What is an Isotope? What is a chemical formula? Define acidity and explain what pH values are and how they are used. Distinguish between organic compounds and inorganic compounds and give an example of each. Distinguish among complex carbohydrates proteins, nucleic acids, and lipids.