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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: Is a quartz crystal made of ionic or covalent compounds
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Q: Is concrete made ionic compounds
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Q: What is the name of he combustion of sulfur
1 answer
Q: A droplet of pure mercury has a density of 13.6 gcm3. What is the density of a sample of pure mercury that is 10 times as large as the droplet
2 answers
Q: . Three different people weigh a standard mass of 2.00 g on the same balance. Each person obtains a reading of 7.32 g for the mass of the standard. These results imply that the balance that was used i
3 answers
Q: In diagram 2 water is flowing by osmosis both into and out of the cell because the concentration of water
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Q: LPG heating gases are lighter than air
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Q: What are the similarities of halogens and noble gases
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Q: The acid test tells whether a mineral is .
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Q: Will a double replacement reaction occur if a potassium hydroxide solution is mixed with a lead(II) nitrate solution if so write a net ionic equation for the reaction
2 answers
Q: What synthesizes cholesterol and fat
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Q: What colorless gas burns in oxygen gas
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Q: Can borax be used to unblock sinks
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Q: Chemicals and materials used in technical designs should be safe true or fals
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Q: In the mammalian fetus where does fetal blood exchenge carbon dioxide for oxygen
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Q: When atoms in a covalent bond share electrons equally the bond is said be
2 answers
Q: Why is it difficult to bond three phosphate groups to adenosine
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Q: What is the mass number of a carbon isotope that has seven neutrons
4 answers
Q: Red spheres represent oxygen atoms and green spheres represent chlorine atoms. Write a balanced chemical equation for the reaction
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Q: What is the electronic configuration of nitrogen in excited state
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Q: The number of credits awarded for the CLEP exam is determined by
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Q: Is distillation a physical or chemical process Explain crude oil
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Q: What converts thermal energy into chemical energy
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Q: Determine the molar mass of copper.
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Q: An ice cube that is dropped into a glass of water melts because
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Q: For reasons do experiments and demonstrations help kinesthetic learners
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Q: Sugar dissolve faster in hot milk as compared to cold milk why
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Q: Is 2K plus Br2 and 2KBr balanced
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Q: What is the relationship between the strength of intermolecular forces and phase change and density
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Q: Name the scientist who coined the term photosynthesis
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Q: What is the oxidation number hg2cl2
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Q: Would calcium-40 be stable or unstable
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Q: What are the products in this chemical reaction C3H8 plus 5O2 3 CO2 plus 4H2O plus energy
2 answers
Q: The net charge on a sulfur (S) ion is 2-. The ion has how many protons and how many electrons
2 answers
Q: Which is released during the formation of a peptide bond
1 answer
Q: Colour of nitric acid in 0.1 bromothymol blue
1 answer
Q: What is the capillary tube
2 answers
Q: Why color red called red
1 answer
Q: What is the weight of acetic acid
7 answers
Q: What is the purpose of washing the crystals after filtration
1 answer
Q: What is the balanced equation for calcium carbonate and vinegar
10 answers
Q: Is lettuce an acid or base
1 answer
Q: What is one danger of excessive nitrogen levels in water is
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Q: What is a balanced equation for protonation of pyridine by HCL
1 answer
Q: Covalent bonds are formed when atoms share electrons and ionic bonds are formed when positive and negative ions bond to form an ionic compound.
5 answers
Q: Which will form an iconic bond
1 answer
Q: What is the most difficult part of a controlled experiment
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Q: Nitrogen in the atmosphere must be fixed before it can be used by plants. Atmospheric nitrogen is fixed by
2 answers
Q: What method of heat transfer does a metal rod heated on up in a fire
1 answer
Q: Diamonds and coal both contain the carbon named what
1 answer
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