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First 9 Weeks Review CW
Con il contributo di: Browder
  • 1. The particle theory of matter states
A) particles in gases vibrate in place
B) particles in liquids are still
C) particles in solids do not move
D) particles of matter are in constant motion
  • 2. The change in state from a solid directly to a gas without passing through the liquid state is known as
A) sublimation
B) vaporization
C) evaporation
D) condensation
  • 3. Which of the following materials is insoluble in water?
A) sand
B) Kool-Aid
C) salt
D) sugar
  • 4. Which of the following is a chemical change?
A) ice melting
B) metal rusting
C) aluminum foil folding
D) paper ripping
  • 5. Which state of matter has a definite volume but no definite shape?
A) solid
B) plasma
C) liquid
D) gas
  • 6. Which of the following is a physical change?
A) plastic burning
B) apple rotting
C) water evaporating into water vapor
D) reaction between baking soda and vinegar
  • 7. Which of the following is true?
A) All carbon atoms have exactly 6 protons in its nucleus
B) All lithium atoms have 3 neutrons in its nucleus
C) It is possible for carbon atoms to have either 6 or 7 protons in its nucleus
D) All helium atoms have 4 protons in its nucleus
  • 8. Which of the following elements has the greatest atomic mass?
A) F
B) Ne
C) S
D) O
  • 9. The measurement of how much mass of a substance is contained in a given volume is its
A) weight
B) density
C) bouyancy
D) mass
  • 10. An unknown substance has a pH of 2. It must be
A) positively charged
B) an acid
C) a base
D) negatively charged
  • 11. In which state of matter are the particles packed tightly together?
A) plasma
B) gas
C) liquid
D) solid
  • 12. Compounds are composed of more than one element. Which of the following is a compound?
A) N3
B) O2
C) NaOH
D) H2
  • 13. Matthew likes his tea very sweet and uses sugar cubes to sweeten his tea. All of the following would help Matthew dissolve sugar into his tea faster EXCEPT –
A) heating the tea
B) using powdered sugar instead of sugar cubes
C) adding more ice
D) stirring the tea
  • 14. Which element has 75 protons in the nucleus of its atoms?
A) Bohrium
B) Rhenium
C) Bromine
D) Arsenic
  • 15. Which of the following correctly lists the scientists in the order in which they proposed a new model of the atom?
A) Dalton, Thomson, Bohr, Rutherford
B) Bohr, Dalton, Rutherford, Thomson
C) Dalton, Thomson, Rutherford, Bohr
D) Dalton, Rutherford, Thomson, Bohr
  • 16. Which statement is true for Chlorine?
A) Chlorine is in group 17, and has 2 energy levels, and is in the Halogen family.
B) The atomic number is 17, the atomic mass (weight) is 35.453, and it (Chlorine) is in the same family as Fluorine.
C) Chlorine is in the same family as sulfur, has 18 neutrons in its nucleus and is a nonmetal gas.
D) Chlorine has 7 valence electrons, and has 35 protons in its nucleus, and is in period 3.
  • 17. Which set of element pairs contains elements chemically similar to each other?
A) Na & Mg
B) Tc & Ru
C) I & At
D) Sb & Te
  • 18. Which of the following is FALSE regarding states of matter and characteristic motion?
A) Solid particles do not move.
B) Particles in solids vibrate in place.
C) Particles in liquids flow around each other.
D) Particles in gases have lots of energy and move freely.
  • 19. A substance that cannot be broken down into other substances by chemical or physical means is a(n)
A) element
B) mixture
C) chemical change
D) compound
  • 20. The change from the gaseous to the liquid state of matter is called
A) sublimation
B) evaporation
C) condensation
D) vaporization
  • 21. The number of protons in the nucleus of an atom is its
A) atomic weight
B) atomic number
C) mass number
D) atomic mass
  • 22. Which of the following is true regarding the atomic model proposed by Niels Bohr?
A) He was the first to suggest that different elements have atoms of different masses.
B) He was the first to propose that an atom was mostly empty space.
C) His model showed electrons moving in specific layers, shells, or orbits.
D) He proposed that an atom is a positively charged sphere with electrons embedded in it.
  • 23. In 1911, Ernest Rutherford was the first to propose that the atom was mostly empty space. Does that still hold true today?
A) No
B) Yes
  • 24. Which scientist proposed the plum pudding model?
A) John Dalton
B) J.J. Thomson
C) Niels Bohr
D) Ernest Rutherford
  • 25. Electrons are so small and quick that their energy levels are not neat planet-like orbits around the nucleus. Instead, they exist in a region called the
A) nucleus
B) molecule
C) electron cloud
D) plum pudding model
  • 26. The one factor that a scientist changes during an experiment is the
A) independent variable
B) dependent variable
C) control
D) constant
Studenti hanno provato anche :
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Physsci2: states of matter reading questions
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