An element is represented by a chemical
[DOC File]Balancing Chemical Equations Activity
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3. What element is represented by the letter "H"? _____ 4. How many "H 's" do you have? _____ Procedure : 1. Using your set of index cards, replicate the chemical equation onto your desk. 2. Label the reactant side and the product side. Record the following results into Table 1: 3. Identify the elements on the reactant side. 4. Count the number ...
Unit 2 Exam PRACTICE: Atomic Structure and the Periodic ...
a. the same element, but different ions b. the same element, but different isotopes c. different elements, but the same ion d. different elements, but the same isotope ... What is the atomic number of the neutral atom represented by the Periodic Table block above? a. 18 c. 39 b. 19 d. 40 ... Standard: Predict the chemical reactivity of elements ...
[DOC File]CP Chemistry Worksheet: Ions
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Write the complete chemical symbol for the ion with 73 protons, 108 neutrons, and 68 electrons. Ta: 73 bottom left 181 top left +5 top right. Write the complete chemical symbol for the ion with 31 protons, 39 neutrons, and 28 electrons. Ga: 31 bottom left 70 top left +3 top right. Name of Element Element …
[DOC File]Chemistry Enhanced Scope & Sequence
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Reactivity is the tendency of an element to enter into a chemical reaction. ... Finally, it is ideal to have as many groups from the periodic table represented as possible. 2. Give students a list of information to find about their assigned elements. The list could include. important isotopes.
[DOC File]BLACKLINE MASTER 1-1
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1. An atom of a metallic element, represented by the symbol X, loses 4 electrons when it combines with a non-metallic element, represented by the symbol, Y. The chemical formula for the compound that forms is XY2. Which one of the following statements correctly accounts for this chemical formula? An atom of element Y loses 4 electrons.
[DOC File]Chemistry: Elements and Compounds Unit Plan, 6th grade ...
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6.5A I know that an element is a pure substance represented by a chemical symbol 6.5B I can recognize that a limited number of elements make up the solid Earth, living matter, oceans, and atmosphere 6.5C I can differentiate between elements and compounds Vocabulary: Pure Substance. Element. Periodic Table of. Elements. Atomic Number. Atomic Symbol
[DOC File]Five Types of Chemical Reaction Worksheet Answers
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Five Types of Chemical Reaction Worksheet Answers. Balance the following reactions and indicate which of the six types of chemical reaction are being represented: a) 2. NaBr + 1. Ca(OH)2 ( 1. CaBr2 + 2. NaOH Type of reaction: double displacement. b) 2. NH3+ 1. H2SO4 ( 1 (NH4)2SO4 Type of reaction: synthesis. c) 4. C5H9O + 27. O2 ( 20. CO2 + 18 ...
[DOCX File]DR. CHIRIE SUMANASEKERA
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What type of chemical bond is present in the Cl. 2. molecule?(b) Cl. 2 reacts with Sr the element to form an ionic compound. Based on periodic properties, identify a molecule, ... The structure of one form of boron nitride is represented above. This form of boron nitride is one of the hardest substances known.
[DOC File]Elements, Compounds & Mixtures
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Chemical Name Chemical Symbol Task: Fill in the missing element names and chemical symbols Zinc ... which picture shows atoms of an element which is a solid? ... of the following molecules in the diagrams. Specify whether they are elements or compounds. (10) 2. Draw the molecules represented by the following formulae. (5) ...
[DOCX File]KS3 EQ Elements and Compounds 98marks 75minutes
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The diagrams represent the way 'atoms' are arranged in six chemical substances.Each 'atom' is represented by a circle.The 'atoms' are labelled with their chemical symbols. (a) (i) Which diagrams represent the structures of chemical elements?Write the numbers.
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