Reporting Category 1: Matter and Energy

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1 Name: Science Teacher: Reporting Category 1: Matter and Energy Atoms 8.5A Fill in the missing information to summarize what you know about atomic structure. Name of Subatomic Particle Location within the Atom Electrical Charge Relative Mass inside the nucleus 1 amu neutral electron Bohr Model Draw an atom that has four protons, five neutrons, and four electrons. Complete the key to identify the three major subatomic particles. KEY Protons Neutrons Electrons 8.5B What subatomic particle determines the identity of an element? The diagram below shows models of four different atoms. Use the models to answer the following questions: Which atom has the greatest mass? Which atom(s) have a neutral electrical charge? Which atom(s) have a positive electrical charge? Which atom(s) have a negative electrical charge?

2 Reactivity 8.5B P: 11 N: 12 P: 18 N: 22 P: 15 N: 16 Atom A Atom B Atom C Which of the atoms above is the most reactive? Explain why. Which atom above is inert or nonreactive? Explain why. Periodic Table 8.5C & 6.6A Define Atomic number = Define Atomic Mass = ** Electrons are not included in the atomic mass. Location on periodic table Luster Conductivity Malleability Most reactive group on periodic table found where? Metals NonMetals Metalloids Define Period # Define Family/group # On the Periodic Table below: Shade in the group of elements that are called the Noble Gases red. Shade all of the elements in Period 4 blue. Circle three elements that are classified as metals. Draw a triangle around three elements that are classified as metalloids. 1 H 2 He 3 Li 4 Be 5 B 6 C 7 N 8 O 9 F 10 Ne 11 Na 19 K 37 Rb 55 Cs 87 Fr 12 Mg 20 Ca 38 Sr 56 Ba 88 Ra 21 Sc 39 Y 57 La 89 Ac 22 Ti 40 Zr 72 Hf 104 Rf 23 V 41 Nb 73 Ta 105 Db 24 Cr 42 Mo 74 W 106 Sg 25 Mn 43 Tc 75 Re 107 Bh 26 Fe 44 Ru 76 Os 108 Hs 27 Co 45 Rh 77 Ir 109 Mt 28 Ni 46 Pd 78 Pt 29 Cu 47 Ag 79 Au 30 Zn 48 Cd 80 Hg 13 Al 31 Ga 49 In 81 Tl 14 Si 32 Ge 50 Sn 82 Pb 15 P 33 As 51 Sb 83 Bi 16 S 34 Se 52 Te 84 Po 17 Cl 35 Br 53 I 85 At 18 Ar 36 Kr 54 Xe 86 Rn

3 How many groups or families of elements are on the table? How many periods of elements are on the table? Define Valence Electrons Elements have similar properties because? Define Reactivity Define Molecule Define Compound Define Chemical Equation What does a coefficient tell you? What does a subscript tell you? Are they balanced? 8.5F Record each element name in the table below. Count the atoms of each element on both the reactant and product side of the equation. C + H 2 O C 6 H 12 O 6 2 Ag + H 2 S Ag 2 S + H 2 Element Reactant Product Element Reactant Product Balanced? Yes or No Balanced? Yes or No State the Law of Conservation of Mass How can we show conservation of mass?

4 Chemical Formulas 8.5D & 6.5C Fill in the missing information to complete the chart. Check One Check One Substance Chemical Symbol Chemical Formula Element Compound # of Elements # of Atoms # of Molecules H 2 O O 3 CaCO 3 He Ag 2CO How many atoms of oxygen are present in two molecules of glucose (C6H12O6)? Chemical Reactions 8.5E Define Physical Change Define Chemical Change Define Chemical Reaction List pieces of Evidence of Chemical Reaction While conducting many different labs over the school year, a student recorded observations in her science journal. Circle all of the following observations that would be considered evidence of a chemical reaction taking place. a) When the 2 clear, colorless solutions were combined, the result was a blue liquid. b) Solution #1 evaporated quickly. c) Some of liquid #2 froze into ice crystals. d) Some of the powder dissolved in the first beaker. e) After the liquids combined, the temperature dropped by 3 C. f) The baking soda and hydrochloric acid combined, forming bubbles. g) The powder absorbed some of the acid. h) The two liquids combined, forming a solid substance that sank to the bottom of the test tube.

5 Organic Compounds 7.6A organic compounds contain carbon and other elements such as hydrogen, oxygen, phosphorus, nitrogen, or sulfur. Check one. Substance Formula Organic Inorganic sugar C 6 H 12 O 6 salt NaCl methane CH 4 water H 2 O Physical/Chemical Changes in the Digestive System 7.6B Structure Physical Chemical Mouth Esophagus Stomach Small Intestine Energy Flow through Living Systems 7.5C Highlight one complete food chain on the food web. What organisms on the food web have the most available energy? What organisms on the food web have the least available energy? Draw arrows on the energy pyramid to show the direction of energy flow from greatest to least. On the pyramid, color producers green, herbivores yellow, and carnivores red. Density 6.6B Density = Use the pictures of the triple beam balance and graduated cylinder to find the density of the rock. (Show all work!)

6 1. Which two elements are most similar? A. Fe and Co B. Li and F C. Cu and Ag D. H and O 2. What are metalloids? A. The metal elements with small atomic numbers B. The elements between metals and nonmetals on the periodic table C. Chunks of metal ore D. Nonreactive metal elements 3. Which of the following elements is a liquid at room temperature? A. N B. B C. Br D. Si 5. Which of the following is a noble gas? A. Ne B. N C. O D. H 6. Which of the following is the better conductor? A. Ge B. S C. Au D. C 7. What elements are contained in the compound LiBr? A. Lithium, Iodine, and Boron B. Lithium and Bromine C. Lithium and Boron D. It is a compound, so it does not contain elements. 4. Which of the following elements is the least reactive metal? A. K B. Ca C. Mn D. Zn C 6 H 12 O 6 + 6O 2 6CO 2 + 6H 2 O 8. During cell respiration, sugar (C 6 H 12 O 6 ) reacts to form carbon dioxide (CO 2 ) and water (H 2 O). Which of the following best explains what happens during cell respiration? A. Single atoms are formed into different elements. B. Atoms are rearranged into different compounds. C. A molecule is broken down into its pure elements. D. Two elements are formed into one compound.

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