Pearson Biology Chapter 2 Test Study Guide Part A Questions and Answers

Pearson Biology Chapter 2 Test Study Guide Part A Questions and Answers What three subatomic particles make up atoms? - Correct Answer️️ -The subatomic particles that make up atoms are protons, neutrons, and electrons. What subatomic particles make up the nucleus of an atoms? - Correct Answer️️ - protons and neutrons What subatomic particles surround the nucleus of an atom? - Correct Answer️️ - electrons The atomic number of an element is equal to - Correct Answer️️ -the number of protons and in an electrically neutral element also the number of electrons The atomic mass of an element is equal to - Correct Answer️️ -the number of protons + the number of neutrons How do you calculate the mass number when given the numbers of subatomic particles? - Correct Answer️️ -add the number of protons plus the number of neutrons What is an isotope? - Correct Answer️️ -An atom of the same element that has a different number of neutrons than the common configuration of the same element. Note: the number of protons AND the number of electrons for all isotopes of the same element are the same.SMART PDF Denoted by the element name followed by the mass number Examples: Carbon-12, Carbon-13, Carbon-14 How are all of the isotopes of an element similar? - Correct Answer️️ -Because they have the same number of electrons, all isotopes of an element have the same chemical properties. In what ways do compounds differ from their component elements? - Correct Answer️️ -The physical and chemical properties of a compound are usually very different from those of the elements from which it is formed. Explain the differences between the elements that make up the compound table salt. - Correct Answer️️ -NaCl = Sodium chloride = table salt an ionic compound that is safe to eat and is used to season and preserve food; chemically stable and shelf safe, a white crystalline solid that dissolves in water Na = Sodium a silver colored metal that is soft enough to cut with a kn