Flashcards
Final Exam ISCI
Cards in this deck (16)
- 1Why are the atomic masses listed in the periodic table not whole numbers?The atomic masses are average atomic masses
- 2If an element has 10 protons and 10 electrons, which expression correctly identifies the element?neon-21
- 3An element has two different isotopes: one that weighs 65 amu and another that weighs 67 amu. If the average atomic mass of all the isotopes is 66.5 amu, what can be said about the relative abundance of isotopes?The isotope with the mass 67 is more abundant than the isotope with the mass of 65
- 4An element can be best described as what?A material consisting of only one type of atom
- 5Using the following generic atom description, chose the correct method for determining the number of neutronssubtract G from F
- 6What does the following element description actually mean? 238 U 92A uranium atom with 92 protons and 146 neutrons
- 7If an element has 15 protons and 16 neutrons and 15 electrons, what is the atomic mass of the element?31
- 8Description of an isotope?element with the same number of protons but a different number of neutrons
- 9What contributes to an atom's mass, electrons or protons? what contributes more to an atom's size?protons contribute more to an atom's mass while electrons contribute more to its size
- 10The nucleus of an electrically neutral atom contains 26 protons. How many electrons does this iron atom have?26
- 11Water and ethanol can be separated by heating the ethanol until it boils away from the water? What type of change is this?A physical change
- 12Compared to a glass of ice water with ice in it, a glass of plain ice-cold water without ice on a warm day will warm up? faster slower the same amount of timefaster
- 13Gasses are so much easier to squeeze into smaller volumes than liquids or solids because of?there is so much space in between the submicroscopic particles
- 14The phase in which atoms and molecules no longer move is the solid phase liquid phase gas phase nonenone
- 15A sample of iron weighs more after it rusts because?of the amount of additional oxygen it contains.
- 16When a gas is changed to a liquid phase, the gas releases energy absorbs energy neitherreleases energy
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- Science Flashcards on Final Exam ISCI, created by Cathryn Flanders on 13/07/2023.
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- Cathryn Flanders · Jul 2023
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- Jul 13, 2023
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