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Grade 12 Commas CCSS: CCRA.L.2, L.11-12.2

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The first comma used in the passage is used to
  1. set off parenthetical elements.
  2. connect two independent clauses.
  3. set off an introductory element.
  4. separate elements in a series.
Grade 5 Atomic Structure
Grade 11 Stoichiometry
How do you determine gram-formula mass mathematically?
  1. Subtract the elements' subscripts
  2. Subtract each element's atomic mass from each other
  3. Add together the products of the elements' atomic masses and their respective subscripts
  4. Multiply by the number of elements
Grade 9 Molecules and Compounds
What are ternary compounds?
  1. These are only composed of one or two elements
  2. These are composed of one element
  3. These contain only metals
  4. These are composed of three or more elements
Grade 6 Periodic Table and Elements
The atomic number of an element is equal to an element's
  1. atomic weight.
  2. atomic mass.
  3. number of protons.
  4. number of neutrons.
  5. none of the above.
Grade 5 Bonds and Mixing
Grade 5 Periodic Table and Elements
Grade 5 STEM Words
Choose the correct spelling.
  1. elament
  2. element
  3. elument
Grade 5 Periodic Table and Elements
Grade 6 Molecules and Compounds
Grade 11 Periodic Table and Elements
Which area on the periodic table represents the electrons in the "d" sublevel?
  1. rare earth elements
  2. columns 3-8
  3. transition elements
  4. none of the above
Grade 8 Periodic Table and Elements
Which statement is most correct about the number of protons in an element and the arrangement of the Periodic Table?
  1. An element in period 4 of the Periodic Table will have more protons than a Period 3 element will.
  2. An element in period 3 of the Periodic Table will have more protons than a Period 4 element will.
  3. An element in period 3 of the Periodic Table will have the same number of protons as a Period 4 element will.
  4. There is no correlation between the period numbers on Periodic Table and the number of protons in the elements.
Grade 12 Matrices CCSS: HSN-VM.C.10
Given a matrix A, is there always another matrix, B, such that their sum is the zero matrix? What are the elements of the matrix B?
  1. No, there isn't always such a matrix B. If there is, its elements are the negative of the corresponding elements in matrix A.
  2. No, there isn't always such a matrix B. If there is, its elements are determined on a case-by-case basis, with no general rule.
  3. Yes, there is always such a matrix. The elements of B are found on a case-by-case basis, with no general rule.
  4. Yes, there is always such a matrix. The elements of B are the negative of the corresponding elements in A.
Grade 10 Periodic Table and Elements
The Periodic Law is
  1. a theory.
  2. a number.
  3. a law stating that all properties of an element result from arrangements of elements based on atomic number.
  4. an element on the Periodic Table.
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