9 Write the Ion Symbol for a carbon atom that has 9 electrons
10 Draw the Lewis Symbol for Ca Draw the Lewis Symbol for CaF2
11 List Protons, Electrons & Neutrons Ge-75List Protons, Electrons & NeutronsIs GE-75 an isotope? Why?
12 An atom of Copper gained 2 electrons, draw the ION SYMBOL An atom of Copper gained 2 electrons, draw the ION SYMBOL. SHOW YOUR CALCULATIONS
13 This element is a metalloid with five valence electrons and has the higher atomic mass of the pair.
14 An atom of Iron was found to have 26 protons, 26 electrons, 32 neutrons. Is this Iron atom an Ion or an Isotope? Why?
15 Which is a Halogen?A: CarbonB: CopperC: BromineD: Potassium
16 How many electron orbitals does Strontium have?
17 Manganese has how many protons, electrons, and neutrons?
18 Which group of elements have no definite shape or volume?
19 This nonmetal has a valence number of one and is very reactive
20 An atom’s valence electrons are those electrons that: A: are repelled by the nucleusB: prevent atoms from bondingC: have the highest energy levelD: are held most tightly
21 How many total atoms are in CaCO3? What is the Formula Mass?What % is Carbon?
22 An atom of Aluminum was found to have 13 protons, 10 electrons, and 14 neutrons. Is this Aluminum atom an Ion or an Isotope?
23 Which of the following is found farthest from the center of an atom? A: protonB: neutronC: electronD: nucleus
24 An element that has the same number of protons but a different number of neutrons is known as a(n)…..A: IsotopeB: IonC: Completely different elementD: Compound
25 Which of the following best describes an atom? A: p+ & e- grouped together in a random patternB: a core of p+ & n’s surrounded by e-C: p+ & e- grouped together in an alternating patternD: a core of e- & n’s surrounded by p+’s
26 Iron oxides, such as rust, form when iron reacts with oxygen in the air. What are the chemical symbols for the 2 elements found in iron oxide?A: I & OB: Ir & OC: Fe & OD: Pb & O
27 What do the elements sulfur, nitrogen, phosphorus & bromine have in common? B: They are noble (inert) gasesA: They have the same thermal conductivityC: They have the same number of protonsD: They are nonmetals
28 Which class of elements best conducts electricity? A: semimetalsB: nonmetalsC: noble (inert) gasesD: metals
29 What is a pure substance that is made from 2 or more elements? A: HomogeneousMixtureB: SolutionC: HeterogeneousMixtureD: Compound