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Chemistry

Delve into the study of matter, its properties, composition, structure, and the changes it undergoes during chemical reactions. Chemistry is the central science connecting other scientific disciplines.

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Q: Complete combustion definition
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Q: Potassium plus iron oxide equation
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Q: Evaluate Hershey and Chases's decision to use radioactive phosperus and sulfur for their experiments. Could they have used carbon or oxygen instead why or why not
1 answer
Q: What describes the usual way by which material can gain a positive charge
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Q: The pricious gem ruby is mainly aluminium trioxide with trace amount of
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Q: What is the difference between the melting point of stearic acid and oleic acid
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Q: Difference between aqueous ammonia and ammonium hydroxide
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Q: Is ionization a physical change or chemical change
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Q: La arena se disuelve en vinagre
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Q: Is sodium hydroxide in cement
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Q: Can you put a penic in another penic
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Q: Explain bond formation in CH4 -ciass 9 for HM
1 answer
Q: Is iodine a conductor
2 answers
Q: What uses symbols to show chemical reactions
11 answers
Q: What is the definition of percent composition
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Q: Does an acidic solution contain hydroxide ions
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Q: List the 3 scenarios for a substance being classified as a weak acid
1 answer
Q: How many labels are needed on a package of nitric oxide compressed
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Q: Two elements that have properties similar to those of chlorine are
1 answer
Q: What is the state of matter at 150 degrees Celsius
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Q: A metallic taste in the mouth epigastric distress and possible nausea and vomiting are ingeston symptoms for which chemical agent
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Q: Place these unknown pH test papers in order from most acidic to most alkaline.
1 answer
Q: How many hours does a chemist work per day
2 answers
Q: Why when you heat up copper sulphate does it turn blue
2 answers
Q: 8 parts bleach to 10 parts water so if you have 15 parts water how much bleach would you need
2 answers
Q: 4. If a pure silicon crystal has 500000 holes inside it how many free electrons does it have
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Q: What is the difference between melting and evaporation
1 answer
Q: Which answer lists the substances in order from greatest energy of particles to least energy of particles
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Q: What value does the prefix nano have
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Q: How do you draw two atoms of fluorine showing the bond that forms between them
1 answer
Q: Polyatomic ion vs. covalent compound
2 answers
Q: Are the bee stings acid or alkali
1 answer
Q: How can electrical conductivity be used to distinguish between magnesssium oxide and silicon(iv)oxide
1 answer
Q: What is nonvolatile poison
1 answer
Q: How do you dissolve lead sulphate
1 answer
Q: What are the properties of ionic bonds
2 answers
Q: What is a greenish-yellow poisonous gas that can react to produce table salt
2 answers
Q: What is a very strong lightweight metal used in body implants
2 answers
Q: What year was the disposable lighter invented
1 answer
Q: The process of changing water into vapor
1 answer
Q: Is there an ionic equation for decomposition of hydrogen peroxide
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Q: Why do you Need to dispose of waste materials and consumables (such as oils and chemicals) in a safe and environmentally friendly way
1 answer
Q: How much baking soda for 1 cup of flour
1 answer
Q: In the formation of coal which stage has the lowest carbon content
1 answer
Q: How many grams of carbon dioxide are needed to produce 125 grams of urea
1 answer
Q: Number of molecules in .75 moles of CO2
2 answers
Q: Is rust an acid
2 answers
Q: Where is sulfur dioxide found
1 answer
Q: What is the expiration date on Phenolphthalein
1 answer
Q: Describe how distillation is used to separate a mixture of ethanol and water
2 answers
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