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Chemistry
6th -
8thgrade
Atoms, Molecules, Elements, and Compounds
25 questions
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- 1. Multiple ChoiceAll matter is made ofenergyatomsairchemistry
- 2. Multiple ChoiceThe positive particles of an atom areelectronsatomsneutronsprotons
- 3. Multiple ChoiceThe central region of an atom where its neutrons and protons are is called thenucleuselectron cloudcorecenter
- 4. Multiple ChoiceNeutrons arenegativepositiveneutralcows
- 5. Multiple ChoiceElectrons arenegative and in the nucleuspositive and at the edge of the atomnot in an atomnegative and at the edge of the atom
- 6. Multiple ChoiceMost of the atom is filled withelectronsempty spacethe nucleusprotons
- 7. Multiple ChoiceWhich of the following is NOT matterairheatsteamcow
- 8. Multiple ChoiceElement is apure substancecompoundmixturemolecule
- 9. Multiple ChoiceWhich of the following is not a compound?HClClNaClCO2
- 10. Multiple Choicewhich one only has one type of atom In it.Elementcompound
- 11. Multiple ChoiceIs salt (NaCI) a compound or a elementCompoundelement
- 12. Multiple ChoiceWhich of the following represents an element?H2OH2NaClCaCO3
- 13. Multiple ChoiceHow many protons are in this element?79196117Cannot be determined
- 14. Multiple ChoiceWhat is the atomic mass (rounded to the nearest whole number) of this element196196.9519779
- 15. Multiple ChoiceHow many protons does an Aluminum atom have? (use the picture to help you)27131440
- 16. Multiple ChoiceHow many neutrons does a sodium atom have?23111234
- 17. Multiple ChoiceCarbon dioxide is a compound.TrueFalse
- 18. Multiple ChoiceWhat is the atomic mass of Neon?1020.1810.1822.18
- 19. Multiple ChoiceWhat characteristic of an element's atoms ALWAYS determines the element's identity?the number of neutronsthe number of protonsthe atomic massthe number of valence electrons
- 20. Multiple Choicewhich one only has one type of atom In it.Elementcompound
- 21. Multiple ChoiceHydrogen is a compound.TrueFalse
- 22. Multiple ChoiceHow many electrons does Si contain? (click to see image)14282None of these
- 23. Multiple ChoiceHow many electrons does potassium K contain? (click to see image)19392040
- 24. Multiple ChoiceHow many electrons does an Iodine atom have?5312673179
- 25. Multiple ChoiceAtoms have neutrons and ________ in the nucleus.protonselectronsshellsions
- Answer choicesTagsAnswer choicesTags