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- 1. Multiple Choice
The number at the bottom of each square on the periodic table is the ...atomic numberatomic masschemical symbolelement name - 2. Multiple ChoiceThe number at the top of each square on the periodic table is the ...atomic numberatomic massChemical SymbolElement Name
- 3. Multiple Choice
The atomic number tells you what?
number of electrons
number of protons (and electrons)
number of neutrons
number of quarks
- 4. Multiple Choice
A proton is....
a negatively charged subatomic particle
a positively charged subatomic particle
a neutrally charged subatomic particle
the only subatomic particle located in the nucleus
- 5. Multiple ChoiceA neutron has a charge of+2No charge-1+1
- 6. Multiple Choice
How many electrons does Oxygen need to fill its outer shell?
3
4
1
2
- 7. Multiple Choice
How many valance electrons does nitrogen have?
7
8
5
3
- 8. Multiple Choice
An element's identity is determined by the number of
electrons.
protons.
neutrons.
mass.
- 9. Multiple Choice
How many electrons do atoms usually need in their 2nd or 3rd shell to be stable?
1
2
6
8
- 10. Multiple Choice
How many covalent bonds can one carbon atom form?
1
2
3
4
- 11. Multiple Choice
Molecules are held together by covalent bonds, meaning their electrons are ___________ between atoms.
shared
donated/accepted
charged
- 12. Multiple Choice
The atom pictured is of which element?
carbon
hydrogen
oxygen
sulfur
- 13. Multiple Choice
What element has 3 protons?
H
Li
He
Mg
- 14. Multiple Choice
What is the mass of this atom?
2
5
7
14
- 15. Multiple ChoiceThe pH scale is a range from:1-70-141-51-20
- 16. Multiple ChoiceA(n) ______ is a substance with a pH less than 7AcidAlkalineBaseBuffer
- 17. Multiple ChoiceA solution with a pH of 8.6 would be...AcidBaseNeutralAcid and Base
- 18. Multiple ChoiceWhat two elements make up water?Helium and oxygenHydrogen and oxygenhelium and carbonoxygen and carbon
- 19. Multiple ChoiceWhat word describes when water is attracted to other substances?cohesionadhesioncapillary actionsurface tension
- 20. Multiple ChoiceAttractions between water molecules are calledCovalent bondsIonic bondsPolar bondsHydrogen bonds
- 21. Multiple Choicetendency of molecules of the same kind to stick to one anothercohesionadhesionsolutionpolar molecule
- 22. Multiple ChoiceA molecule with electrically charged areas is called a _______________.magnetpolar moleculesolutionelectrical molecule
- 23. Multiple ChoiceWhich end of the water molecule has a slightly positive charge?the oxygen endthe hydrogen endboth ends are slightly positiveneither end is positive
- 24. Multiple ChoiceThe reason the water balloon did NOT pop while held over a flame is water's _________.Less dense than air.Hydrogen bonds between water molecules.polarity.high specific heat capacity.
- 25. Multiple ChoiceWater is a universal solvent because it...It can be found anywhereIt freezes when it gets coldfloats when frozenDissolves most substances
- 26. Multiple ChoiceThe fact that ice floats on liquid water is due to the fact that water's solid is ___________ than it's liquid formless polarmore polarless densemore dense
- 27. Multiple ChoiceWhat is the reason why oil and water don't mix?Oil is too heavy to mix with waterWater can only mix with polar moleculesWater can only mix with non-polar moleculesOil is too light to mix with water
- Answer choicesTagsAnswer choicesTags