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- 1. Multiple ChoiceA(n) ______ is a substance with a pH less than 7AcidAlkalineBaseBuffer
- 2. Multiple ChoiceA(n) _______ is a substance with a pH greater than 7.BaseAcidBufferWater
- 3. Multiple ChoiceIf a pH is too alkaline, what can be added to make the pH more acidic?Sulfuric AcidSodium HydroxideWaterCalcium Carbonate
- 4. Multiple ChoiceA solution with a pH of 8.6 would be...AcidBaseNeutralAcid and Base
- 5. Multiple ChoiceA solution with a pH of 3.6 would be...AcidBaseNeutralAcid and Base
- 6. Multiple ChoiceA pH of 14 is a .....strong acidweak acidStrong baseWeak base
- 7. Multiple ChoiceThe Law of Conservation of Mass statesthat matter exists in all states and reacts the samethat matter can only be changed into new substances by introducing a catalystthat matter exists in the same state throughout any chemical changethat matter cannot be created or destroyed and that the mass of the products must equal the mass of the reactants
- 8. Multiple Choice
How many total atoms are written here?
6MgF2
3
6
12
18
- 9. Multiple Choice
___________________ are the elements are compounds that leave (are formed in) a chemical reaction.
Polymers
Bonds
Reactants
Products
- 10. Multiple Choice
If I suspect carbon dioxide is a product of a reaction, to test for the gas I could ...
Bubble it through limewater and it will go milky
do the pop test and it will burn
Light a taper and it will burn brighter
note the colour change to yellow
- 11. Multiple ChoiceIn a chemical reaction, bonds are broken and new bonds are formed that create new substances. The bonds that are broken are called what?ReactantsProductsAtomsCatalysts
- 12. Multiple ChoiceWhat is the left part of a chemical equation called?
2H2 + O2 --> 2H2OReactantsProductsYieldsChemical Equation - 13. Multiple ChoiceWhat is the right part of a chemical equation called...
2H2 + O2 --> 2H2OReactantsProductsYieldsChemical Equation - 14. Multiple ChoiceHow many atoms of carbon (C) are in C6H12O6?361224
- 15. Multiple ChoiceHow many elements are in C6H12O6?1234
- 16. Multiple ChoiceHow many Aluminum are in Al2O3?325
- 17. Multiple ChoiceIs the following equation balanced?...
Al + O2 --> 2Al2O3Yes!No! - 18. Multiple ChoiceWhich of the following reactions is balanced?2CH4 + O2 -> CO2 + H2OCH4 + 2O2 -> CO2 + H2OCH4 + 2O2 -> CO2 + 2H2ONone of the chemical equations are balanced.
- 19. Multiple ChoiceHow many HCl molecules do you need to balance this equation?
Mg + __HCl ---> MgCl2 + H21234 - 20. Multiple Choicea substance formed when two or more elements are chemically bonded togetherElement SoupPure ElementIonCompound
- 21. Multiple Choice
a process or reaction in which the system absorbs energy from its surroundings; usually, but not always, in the form of heat which makes it feel cold
Endothermic Reaction
Exothermic Reaction
Corrosion
Precipitation
- 22. Multiple Choicea chemical reaction that releases energy by light or heatEndothermic ReactionExothermic ReactionDiffusionFission
- 23. Multiple Choicetype of reaction in which a compound is broken down into its simple elementsDouble DisplacementSingle DisplacementSynthesisDecomposition
- 24. Multiple Choicetype of reaction in which two or more elements combine to form a more complex compoundDouble DisplacementSingle DisplacementSynthesisDecomposition
- 25. Multiple Choice
Which is the name of the kind of solid substance formed in this figure?aqueousprecipitateacidsynthesis - 26. Multiple Choice
Which type of reaction takes place in the presence of oxygen and produces carbon dioxide and water?
double replacement
decomposition
combustion
corrosion
- 27. Multiple ChoiceProvides evidence that a chemical reaction has occurred.dissolvingmeltingformation of a gasbending
- 28. Multiple Choice
What is the type of reaction shown above?
Synthesis
Decomposition
Precipitation
Neutralisation
- 29. Multiple Choice
Identify the reaction type:
C2H6 + O2 --> CO2 + H2O
Corrosion
Synthesis
Neutralisation
Combustion
- 30. Multiple Choice
Identify the reaction type for the following equation:
K + F2 --> KF
Neutralisation
Precipitation
Synthesis
Decomposition
- 31. Multiple Choice
Which of the following is an neutralisation reaction?
2Na + Cl2 → 2NaCl
CH4 + 2O2 → CO2 + 2H2O
HCl + KOH → KCl + H2O
CaCO3 → CO2 + CaO
- 32. Multiple Choice
Identify the reaction type:
H2O2 --> H2O + O2
Decomposition
Synthesis
Combustion
Neutralisation
- 33. Multiple Choice
The picture above is a signage for dangerous good Class 5. Substances under this class are usually:
oxidising substances that readily yields oxygen and cause other materials to combust
readily ignite and burn explosively, some spontaneously
Pose harm from inhalation, ingestion, absorption
cause disintegration of tissues, external fuming potential
- 34. Multiple Choice
Which of the following substances follow the signage above?
Liquified Petroleum Gas
Hydrocyanic Acid
Biohazard material
Plutonium
- 35. Multiple Choice
Radioactive materials are under class:
6
7
8
9
- 36. Multiple Choice
Corrosive substances are under class:
8
7
6
5
- 37. Multiple Choice
Flammable liquids are liquids, or mixtures of liquids, or liquids containing solids in solution or suspension (for example paints, varnishes, lacquers, etc., but not including substances otherwise classified on account of their other dangerous characteristics.
Class 1
Class 2
Class 3
Class 4
- 38. Multiple Choice
What does this symbol mean if found as a label on a substance?
Explosive
Flammable
Set this on fire
Oxidising
- 39. Multiple Choice
What does this symbol stand for?
Flammable
Oxidising
Non-flammable
Explosive
- 40. Multiple Choice
What does this symbol stand for?
Flammable
Oxidising
Irritant
Corrosive
- 41. Multiple Choice
What does this symbol stand for?
Flammable
Toxic
Deadly
Corrosive
- 42. Multiple Choice
This symbol tell us the chemical it is labelling is:
Harmful to the environment
A pressurised container
Explosive
Corrosive
- 43. Multiple Choice
This symbol would be seen on which of the following
Radioactive substance
Waste bin of used vaccinations
Cancer patient
Petroleum
- 44. Multiple Choice
A reaction between an acid and a base is called
Neutralisation
Precipitation
Combustion
Corrosion
- 45. Multiple Choice
Which types of reaction are classified as 'oxidation' reactions?
Precipitation
Corrosion
Neutralisation
Combustion
- 46. Multiple Choice
Acid + Base -->
Salt + hydrogen gas
Salt + water
Carbon dioxide + water
Salt + precipitate
- 47. Multiple Choice
Which gas test should I use to check for hydrogen gas as a product of a reaction?
pop test
burning splint test
limewater test
fire extinguisher test
- 48. Multiple Choice
Which test should I use to test for the presence of oxygen gas as a product?
pop test
burning splint test
limewater test
fire blanket test
- 49. Multiple Choice
A metal reacting with oxygen in the presence of water is
precipitation
decomposition
combustion
corrosion
- 50. Multiple Choice
The energy required to begin a chemical reaction is know as
initiation energy
kinetic energy
activation energy
commencement energy
- Answer choicesTagsAnswer choicesTags