SUMMATIVE TEST NO.1

[Audio] Good day  summative test NO.1 Good day  summative test NO.1.

Directions:. D. Floral leaf accent. Read and analyze the questions carefully and choose the letter of the correct answer..

[Audio] 1. The Big Bang Theory is the widely accepted cosmological model explaining the formation of the universe. Which of the following is Not evidence of Big Bang Theory? a Discovery of the primordial elements. b A Cosmic Electromagnetic background was detected. c Explosion of a nearby planet. d Measurement showed that the universe is expanding The Big Bang Theory is the widely accepted cosmological model explaining the formation of the universe. Which of the following is Not evidence of Big Bang Theory? a Discovery of the primordial elements. b A Cosmic Electromagnetic background was detected. c Explosion of a nearby planet. d Measurement showed that the universe is expanding.

[Audio] What will happen once the star has used up the hydrogen in its core? a Hydrogen burning will start. c Proton-proton chain will proceed. b C-N-O cycle stops. d Helium Burning will stop. 2. What will happen once the star has used up the hydrogen in its core? a Hydrogen burning will start. c Proton-proton chain will proceed. b C-N-O cycle stops. d Helium Burning will stop..

[Audio] “ A young English physicist who discovered a correlation between what he called atomic number and the frequency of X-rays generated by bombarding the elements with high energy electrons. Dmitri Mendeleev c Lothar Meyer Henry Moseley d John Newlands 3. ” A young English physicist who discovered a correlation between what he called atomic number and the frequency of X-rays generated by bombarding the elements with high energy electrons. Dmitri Mendeleev c Lothar Meyer Henry Moseley d John Newlands.

[Audio] 4. An English chemist noticed that when the elements were arranged according to increasing mass every eighth element would exhibit similar properties. Dmitri Mendeleev c Lothar Meyer Henry Moseley d John Newlands An English chemist noticed that when the elements were arranged according to increasing mass every eighth element would exhibit similar properties. Dmitri Mendeleev c Lothar Meyer Henry Moseley d John Newlands.

[Audio] 5. All atoms can be identified through the number of ____ in their nucleus and the number of ______ that move around the nucleus. Neutrons and atomic mass c electrons and neutrons Protons and neutrons d protons and electrons All atoms can be identified through the number of ____ in their nucleus and the number of ______ that move around the nucleus. Neutrons and atomic mass c electrons and neutrons Protons and neutrons d protons and electrons.

[Audio] 6. It is a star that blows apart and releases a large amount of energy. Protostar c Supernova Red giant d Nucleosynthesis It is a star that blows apart and releases a large amount of energy. Protostar c Supernova Red giant d Nucleosynthesis.

[Audio] “ Is a star that has used up its hydrogen supply in the core and switched into the thermonuclear fusion of hydrogen in the shell surrounding the core. Protostar c Supernova Red giant d Nucleosynthesis 7. ” Is a star that has used up its hydrogen supply in the core and switched into the thermonuclear fusion of hydrogen in the shell surrounding the core. Protostar c Supernova Red giant d Nucleosynthesis.

[Audio] Is a stellar core formed when the fragments of a collapsed molecular cloud contract. Protostar c Supernova Red giant d Nucleosynthesis 8. Is a stellar core formed when the fragments of a collapsed molecular cloud contract. Protostar c Supernova Red giant d Nucleosynthesis.

[Audio] “ 9. Is the process by which elements are formed within stars. a Protostar c Supernova b Red giant d Nucleosynthesis ” Is the process by which elements are formed within stars. a Protostar c Supernova b Red giant d Nucleosynthesis.

[Audio] 10. Which statement describes the neutron? a It is positively-charged. b It is part of a gamma radiation. c It was discovered by Rutherford. d It is the heaviest subatomic particle. Which statement describes the neutron? a It is positively-charged. b It is part of a gamma radiation. c It was discovered by Rutherford. d It is the heaviest subatomic particle..

[Audio] 11. The two elements created at the beginning of the universe are ______________. a hydrogen and helium c helium and oxygen b hydrogen and carbon d carbon and nitrogen The two elements created at the beginning of the universe are ______________. a hydrogen and helium c helium and oxygen b hydrogen and carbon d carbon and nitrogen.

[Audio] “ 12. The most abundant element in the universe is ____________. a hydrogen b helium c carbon d nitrogen ” The most abundant element in the universe is ____________. a hydrogen b helium c carbon d nitrogen.

[Audio] 13. Which of the following describes stellar nucleosynthesis? a It is the formation of elements during a supernova explosion. b It is the process by which elements are produced in gas clouds. c It is the formation of light elements such as hydrogen and helium. d All of the above Which of the following describes stellar nucleosynthesis? a It is the formation of elements during a supernova explosion. b It is the process by which elements are produced in gas clouds. c It is the formation of light elements such as hydrogen and helium. d All of the above.

[Audio] 14. When two electrons in a chemical bond are equally shared between two different atoms the bond is _____________. a Ionic ` b polar covalent c nonpolar covalent d Metallic When two electrons in a chemical bond are equally shared between two different atoms the bond is _____________. a Ionic ` b polar covalent c nonpolar covalent d Metallic.

[Audio] “ 15. Given the electronegativity of rubidium is 0.8 and of chlorine is 3.0 our best interpretation of a bond between these two elements would be ___________. a ionic b polar covalent c nonpolar covalent d covalent ” Given the electronegativity of rubidium is 0.8 and of chlorine is 3.0 our best interpretation of a bond between these two elements would be ___________. a ionic b polar covalent c nonpolar covalent d covalent.

[Audio] 16. Separation of a charge around a molecule into a more positive and more negative area is called? London dispersion b Electronegativity c Cohesive forces d Dipole moment Separation of a charge around a molecule into a more positive and more negative area is called? London dispersion b Electronegativity c Cohesive forces d Dipole moment.

[Audio] 17. Which molecule is non-polar? a CO2 b NH3 c SO2 d H2O Which molecule is non-polar? a CO2 b NH3 c SO2 d H2O.

[Audio] “ 18. In a polar covalent bond electrons are shared ___________. a equally b between non-metals with similar electronegativity c unequally d between a metal and a non-metal ” In a polar covalent bond electrons are shared ___________. a equally b between non-metals with similar electronegativity c unequally d between a metal and a non-metal.

[Audio] 19. This molecule has______bond and is a _________molecule. a non-polar; non-polar c polar polar b polar non-polar d non-polar; polar This molecule has______bond and is a _________molecule. a non-polar; non-polar c polar polar b polar non-polar d non-polar; polar.

[Audio] 20. The ability of an atom to attract electrons to itself is called _____________. a Geometry b Conductivity c Electronegativity d Ionization energy The ability of an atom to attract electrons to itself is called _____________. a Geometry b Conductivity c Electronegativity d Ionization energy.

[Audio] “ 21. It is the weakest intermolecular force which is formed due to temporary dipoles of a non-polar molecule and is present in all molecules. Dipole-dipole c Ion-dipole bonds Hydrogen bonds d London Dispersion force ” It is the weakest intermolecular force which is formed due to temporary dipoles of a non-polar molecule and is present in all molecules. Dipole-dipole c Ion-dipole bonds Hydrogen bonds d London Dispersion force.

[Audio] 22. The bond that exists between water molecules. It is the strongest intermolecular force. Dipole-dipole c Ion-dipole bonds Hydrogen bonds d London Dispersion force The bond that exists between water molecules. It is the strongest intermolecular force. Dipole-dipole c Ion-dipole bonds Hydrogen bonds d London Dispersion force.

[Audio] 23. is the force of interaction that exists between charged particles called ions and a polar molecule. a Dipole-dipole c Ion-dipole bonds b Hydrogen bonds d London Dispersion force is the force of interaction that exists between charged particles called ions and a polar molecule. a Dipole-dipole c Ion-dipole bonds b Hydrogen bonds d London Dispersion force.

[Audio] 24. is the force of attraction that exists in polar molecules. a Dipole-dipole c Ion-dipole bonds b Hydrogen bonds d London Dispersion force is the force of attraction that exists in polar molecules. a Dipole-dipole c Ion-dipole bonds b Hydrogen bonds d London Dispersion force.

[Audio] A Answers 13. C 1. A 2. C 14. B 3. B 15. B 4. D 16. D 5. D 17. A 6. C 18. A 7. B 19. C 8. A 20. C 9. D 21. D 10. D 22. B 11. A 23. C 12. A 24. A Presentation title.

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