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- 1. Multiple Choice
What are the 3 particles that make-up the atom?
protons, neutrons, and isotopes
neutrons, isotopes, and electrons
positives, negatives, and electrons
protons, neutrons, and electrons
- 2. Multiple Choice
What is the number of protons that the element in this image contain?
14
7
15
18
- 3. Multiple Choice
How many neutron are in the atom "K"?
7
2
39
12
- 4. Multiple ChoiceMost of the mass in an atom is concentrated in the...electronsnucleusprotonsempty space
- 5. Multiple Choice"C" is the element symbol for which element?calciumcarbonchlorinecadmium
- 6. Multiple Choice
True or False? Neutrons have a negative charge
True
False
- 7. Multiple ChoiceIf I gain electrons I becomePositive because I've added to my atomnegative because I've added electronssame because i'm balancedequal because now I have electrons
- 8. Multiple Choice
The proper formula for magnesium hydroxide:
MgOH
Mg2OH
Mg(OH)2
Mg2OH2
- 9. Multiple Choice
How do the following two elements bond together?
Al3+ O2-
AlO
Al2O3
Al3O6
Al3O2
- 10. Multiple ChoiceAn ion with a positive charge is a/ananioncation
- 11. Multiple ChoiceThe rate at which a radioactive element decays is its ____.quarter lifewhole lifewonderful lifehalf life
- 12. Multiple Choice
The three types of nuclear radiation in order of increasing penetrating power are
alpha, beta, gamma
alpha, gamma, beta
beta, alpha, gamma
gamma, alpha, beta
- 13. Multiple ChoiceAn isotope of an element has the same number of _________, but a different number of _________.Protons, electronsProtons, neutronsElectrons, neutrons
- 14. Multiple ChoiceHow many elements are in C6H12O6?1234
- 15. Multiple ChoiceWhich of the following is a compound?CoO2CCO2
- 16. Multiple ChoiceYou know you a chemical reaction has occurred ifthere is a precipitate.there is a color change.there is a temperature change.All of these answers are evidence.
- 17. Multiple ChoiceA molecule is made up ofone or more mixtures.one or more compounds.one or more atoms.one or more solutions.
- 18. Multiple ChoiceWhich scientific law states that an atom cannot be created or destroyed:Law of Conservation of MatterLaw of GravityLaw of Conservation of MassLaw of Motion
- 19. Multiple Choice
Which best describes a chemical reaction?
Products --> Reactants
Reactants --> Products
- 20. Multiple Choice
Name the process that uses bacteria to extract metals from low grade ores
Mining
Phytomining
Bioleaching
Micromining
- 21. Multiple Choice
In Electrolysis of sodium chloride which 2 of the following are TRUE
Positive sodium ions move to the Positive electrode
Negative chloride ions move to the positive electrrode
Sodium chloride has to be molten or dissolved
Free electrons in the ions move to electrodes.
- 22. Multiple Choice
Which 2 are true?
Acid turns red litmus blue
Alkalis turn blue litmus red
Acids turn blue litmus red
Alkalis turn red litmus blue
- 23. Multiple Choice
Which 2 are true about this molecule?
It is the alkene ethene.
It has a double ionic bond
It has a double covalent bond.
Its formula is C2H6
- 24. Multiple Choice
What type of bonds in sodium chloride
Covalent
Metallic
Ionic
Hydrogen
- 25. Multiple Choice
Which one is a mixture?
Air
Sodium metal
Sodium chloride
Water
- 26. Multiple Choice
In graphite each atom is
Hydrogen
Chlorine
Carbon
Silicon
- 27. Multiple Choice
This is a
Beaker
Conical flask
Pipette
Volumetric flask
- 28. Multiple Choice
This image is
Wendy
Peppa Pig
Wendy and Peppa Pig
Wendy and George
- 29. Multiple Choice
If you wanted to separate 2 liquids like alcohol and water you would use
Distillation
Chromatography
Filtration
- 30. Multiple Choice
The best way of purifying a salt you made and removing water is
Evaporation of water then filtration
Distillation then chromatography
Filtration then evaporation of water
Use a quadrat
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