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TExES Science 7-12: Matter & Atomic Structure Chapter Exam

Exam Instructions:

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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Question 1 1. Pure substances are further divided into elements and compounds. Which one best describes the rust found on a vehicle over time?

Question 2 2. Which element has a mass number of 12 and contains 6 neutrons?

Question 3 3. _____ properties of matter can be determined without changing composition, while _____ properties of matter must change the composition of matter.

Question 4 4. The ability of iron to react to oxygen is an example of _____

Question 5 5. The average atomic mass or atomic weight found on the periodic table is _____.

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Question 6 6. How many neutrons does the most common isotope of hydrogen have?

Question 7 7. Who first coined the term atom, meaning indivisible?

Question 8 8.

A piece of pencil graphite (made of carbon atoms) has a mass of 0.12 grams. How many moles of carbon atoms are in the lead?

(The molecular mass of carbon is 12 g/mol.)

Question 9 9. Which of the following is NOT an example of a compound?

Question 10 10. When an electron moves from an excited state to a ground state, it will _____.

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Question 11 11. What did Rutherford discover in his gold foil experiment?

Question 12 12.

A computer chip contains 1.20 x 10^23 atoms of silicon. What is its mass?

(The molecular mass of silicon is 28 g/mol.)

Question 13 13. The mass number indicates:

Question 14 14. Homogeneous mixtures are also called

Question 15 15. Which of the following is the most heterogeneous mixture?

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Question 16 16. If Atom #1 has 19 protons and 22 neutrons, and Atom #2 has 20 protons and 22 neutrons, are these isotopes of the same element?

Question 17 17. Which is a slow way to separate solid sugar from a solution of sugar water?

Question 18 18. Alcohol and water are best separated from one another by:

Question 19 19. When writing electron configurations, electrons are represented in their lowest possible energy state, called their _____.

Question 20 20. Which of the following changes to sugar is an example of a physical change?

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Question 21 21. Which of the following was the instrument used for the discovery of the electron?

Question 22 22. ALL atoms of the same element have:

Question 23 23. Why should you avoid looking directly at magnesium burning?

Question 24 24. The Bohr model of the atom:

Question 25 25. Both gases and liquids:

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Question 26 26. Which of the following is a physical change?

Question 27 27. Which scientist is credited with discovering the charge of individual electrons?

Question 28 28.

A piece of copper wire contains 5 moles of copper atoms. What is its mass?

(The molecular mass of copper is 63.5 g/mol.)

Question 29 29. You performed paper chromatography on some marker ink and found that one of the pigments had a retention factor of 0.25. The total distance the solvent traveled was 8.0 cm. How far did the pigment travel?

Question 30 30.

Which of the following are physical changes?

1. melting ice

2. boiling water

3. magnetizing a pin

4. cooking an egg

TExES Science 7-12: Matter & Atomic Structure Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

TExES Science 7-12 (236): Practice & Study Guide  /  Science Courses
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