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- 1. Multiple Choice
Which of the following is not a compound?
HCl
Cl
NaCl
CO2
- 2. Multiple ChoiceWhich of the following represents an element?H2OH2NaClCaCO3
- 3. Multiple ChoiceWhat is made up two or more elements that are chemically combined?ElementMixtureCompoundSolids
- 4. Multiple ChoiceWhich of the following an element?Carbonic AcidCopperIron and CopperWater
- 5. Multiple Choice
1234 - 6. Multiple Choice1234
- 7. Multiple ChoiceHow many elements are represented in the compound?
Na2CO31234 - 8. Multiple ChoiceIs sugar (C12H22O11) an element or a compound?ElementCompound
- 9. Multiple ChoiceIs water an element or a compound?ElementCompound
- 10. Multiple ChoiceA compound consists of two or more elements bound together.TrueFalse
- 11. Multiple ChoiceIs Iron (Fe) an element or a compound?ElementCompound
- 12. Multiple ChoiceHow many atoms of carbon (C) are in C6H12O6?361224
- 13. Multiple ChoiceWhich of the following is a compound?CoO2CCO2
- 14. Multiple ChoiceWhich is the correct formula for:
three hydrogen (H)
one sulfur (S)
four oxygen (O)H3SO4HSO4H4S3OH2O - 15. Multiple ChoiceThe blue numbers in the image below represent ________I don't know, and don't want to trycoefficientssubscriptsnone of the answers are correct
- 16. Multiple ChoiceHow many atoms are there TOTAL in:
H2SO46573 - 17. Multiple ChoiceHow many elements are in C6H12O6?1234
- 18. Multiple ChoiceHow many Sodium (Na) are in 6NaCl?1126
- 19. Multiple ChoiceWhich of the following chemical formulas represents a compound?C3O2CH3CHOH2
- 20. Multiple Choice
Can be found on the periodic table
Element
Compound
Mixture
- 21. Multiple ChoiceWhich of these is an element?H2CrCr3OHPNi
- 22. Multiple ChoiceHow many molecules are in 10MgCl2?1023013
- 23. Multiple ChoiceHow many elements are present in this compound?
Mg2As3COHNi224610 - 24. Multiple ChoiceIf there is no subscript, there is ______ atom(s) of that element.02only 11 million
- 25. Multiple ChoiceHow many Elements are in the compound C2H8O ?2130
- 26. Multiple ChoiceHow many O's are in Al₂(SO₄)₃412724
- 27. Multiple ChoiceHow many nitrogen atoms in
Mg(NO3)21236 - 28. Multiple ChoiceHow many magnesium atoms in
Mg(NO3)21236 - 29. Multiple ChoiceHow many oxygen atoms in
Mg(NO3)21236 - 30. Multiple ChoiceHow many nitrogen atoms are in
(NH4)3PO414312 - 31. Multiple ChoiceHow many hydrogen atoms are in
(NH4)3PO414312 - 32. Multiple ChoiceHow many oxygen atoms are in
(NH4)3PO414312 - 33. Multiple ChoiceHow many oxygen atoms in total are in
CuSO4⋅5H2O1259 - 34. Multiple Choice
How many total atoms are in this formula? 3Zn2O3H
6
9
18
- 35. Multiple ChoiceWhich of these formulas contain equal numbers of nitrogen atoms?Formulas I and IIIFormulas I and IVFormulas II and IIIFormulas I, II, and V
- 36. Multiple ChoiceHow many elements are in H2O?1234
- 37. Multiple ChoiceIn the chemical formula for sucrose (C12H22O11), how many oxygen atoms are there in each molecule?1222111
- 38. Multiple ChoiceA compound ___.is a pure elementhas the same properties as its partsis a combination of two or more elementsis composed of only metals
- 39. Multiple Choice
A substance that cannot be separated into simpler substances by any means.
Element
Compound
Mixture
Chemical
- 40. Multiple ChoiceThese contain only one kind of atom.elementcompoundmixturewater
- 41. Multiple Choice
Which is the correct model for 2H2O?
- 42. Multiple ChoiceWhat is the CHEMICAL FORMULA for the molecular model pictured above?CH2OC2H2O2CHO2CHO
- 43. Multiple ChoiceWhat is the CHEMICAL FORMULA for the molecular model pictured above?CHC4H4CH4C4H
- 44. Multiple Choice
How many elements are in the compound C2H8O ?
2
1
3
0
- 45. Multiple ChoiceThe formula for glucose is C6H12O6. How many elements does glucose contain?1324432
- 46. Multiple Choice
Which of the following lists all the elements that are present in a molecule of potassium carbonate, K2CO3 ?
argon and oxygen
phosphate and calcium
potassium, carbon, and oxygen
phosphorus, oxygen, and calcium
- 47. Multiple Choice
___________ are the smallest unit of an element that maintains the properties of that element.
Atoms
Elements
Compounds
Mixtures
- 48. Multiple Choice
An _______________ is made up of one or more of the same kind of atom chemically combined.
atom
element
molecule
compound
- 49. Multiple Choice
True or False: elements AND compounds are pure substances.
True
False
- 50. Multiple Choice
A pure substance is
the way something is put together or combined
two or more different substances not chemically combined
a kind of matter that always has a specific composition chemically combined.
a small number that tells the amount of each element in a compound
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