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Physical Science Final (Pena) Questions and Correct Answers | Latest UpdatePhysical Science Final (Pena) Questions and Correct Answers | Latest Update CA$16.55   Add to cart
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Physical Science Final (Pena) Questions and Correct Answers | Latest UpdatePhysical Science Final (Pena) Questions and Correct Answers | Latest Update
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Which of the following statements is not true? -:- d. Neutrons have a negative charge What is an atom's nucleus made of? -:- a. protons and neutrons The charge of an atom is -:- b. neutral An iron atom has an atomic mass of 56. Its atomic number is 26. How many neutrons does the iron ato...

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  • September 20, 2024
  • 19
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • physical science final pena questions and correc
  • which of the following statements is not true

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2024 /2025 | © copyright | This work may not be copied for profit gain Excel!




Physical Science Final (Pena) Questions and
Correct Answers | Latest Update
Which of the following statements is not true?


✓ -:- d. Neutrons have a negative charge




What is an atom's nucleus made of?


✓ -:- a. protons and neutrons




The charge of an atom is


✓ -:- b. neutral




An iron atom has an atomic mass of 56. Its atomic number is 26. How many neutrons does

the iron atom have?


✓ -:- a. 30




How much effect do high percent abundance isotopes have on the average atomic mass of

an element?


✓ -:- d. more than low percentage isotopes


1|P a g e | G r a d e A + | 2 0 2 0 2 5

,2024 /2025 | © copyright | This work may not be copied for profit gain Excel!




An element's atomic number is equal to its number of


✓ -:- a. protons




Two different isotopes of an element have different


✓ -:- a. numbers of neutrons




What is the mass number of a element that has: 14 protons, 14 electrons, and 15 neutrons?


✓ -:- c. 29




Which statement about the atom's nucleus is correct?


✓ -:- b. The nucleus is made of protons and neutrons and has a positive

charge




Oxygen's atomic number is 8. This means that an oxygen atom has


✓ -:- c. eight protons in its nucleus




Which statement about an element's average atomic mass is correct?
2|P a g e | G r a d e A + | 2 0 2 0 2 5

, 2024 /2025 | © copyright | This work may not be copied for profit gain Excel!



✓ -:- c. It is a weighted average, so common isotopes have a greater effect

than uncommon ones.




An atom's mass number equals the number of


✓ -:- b. protons plus the number of neutrons




How many electrons does an element have with a mass number of 36?


✓ -:- d. unknown




The nucleus of an atom consists of 7 protons and 5 neutrons. The total number of electrons

present in a neutral atom of this element is


✓ -:- b. 7




Atoms of 160, 170, and 180 have the same number of


✓ -:- c. protons, but a different number of neutrons




All atoms of an element have the same


✓ -:- c. atomic number

3|P a g e | G r a d e A + | 2 0 2 0 2 5

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