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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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Questions
Q: What is the difference between synthesis and degradation
1 answer
Q: Which of the following elements is the smallest
3 answers
Q: How much does a toothbrush weigh in grams
1 answer
Q: Atoms may emit light energy when
3 answers
Q: What happens to the molecules of a compound when it changes from liquid to solid
3 answers
Q: What happens when sodium formate and soda lime are heated
1 answer
Q: How much copper inside a hot water heater
1 answer
Q: Which elements would most likely become a negative ion when forming a chemical bond
7 answers
Q: What are the two main products of the combustion of methane and others fossil fuels
2 answers
Q: How strong is Rhodium
2 answers
Q: Nitrogen gas react with hydrogen gas to form ammonia what are the reactants in this chemical reaction
2 answers
Q: Group 1a elements have how many electrons in their valence shells
2 answers
Q: What is an example of an impractical technological solution
2 answers
Q: Why are synthetic elements dangerous
2 answers
Q: Which statement best describes the polarity of the molecule PI3
3 answers
Q: Is butane a gas at 20 degrees Celsius
1 answer
Q: Why can it be said that the occurrence of silicon is universal
1 answer
Q: How do you recognize that two molecules are indeed isomers
3 answers
Q: What is the parent acid for ammonium nitrate
1 answer
Q: What function does Styrofoam perform in an hydrogen bomb
1 answer
Q: Indicate whether the rate of dissolving increases or decreases for each of the following. a)heat the solution b)stir the solution c)grind the solution
3 answers
Q: Is soot formed as a candle burns a chemical change
1 answer
Q: When two substances react chemically to produce a new substance what is TRUE of the mass of the two substances compared to the mass of the new substance
2 answers
Q: How are nitrates changed back into nitrogen
1 answer
Q: How much is 1 miligram
1 answer
Q: How many liters of fluorine gas will it take to convert 100 grams of C2H4 to C2H4F2 using the following reaction
1 answer
Q: What is the difference between ionic size and atomic size
1 answer
Q: Why does calcium carbonate does not react with carbonic acid
1 answer
Q: What is a characteristic property of an element
2 answers
Q: Why necessary to pre rinse volumetric glassware with the solution to be used in the titration process
1 answer
Q: Why is the pulmonary vein the only oxygen rich vein in your body
1 answer
Q: Which type of substance can only be separated by a chemical reaction
1 answer
Q: Is potassium abundant
3 answers
Q: How do air and water cause chemical weathering
2 answers
Q: What type of chemical reaction is Mg and HCL
1 answer
Q: What do you call a liquid mixture
1 answer
Q: Is oxidized in a galvanic cell made with silver and nickel electrodes
2 answers
Q: What is the balanced equation of p2s5 pcl5 yields pscl3
2 answers
Q: Why does soda implode when turned upside down in cold water
1 answer
Q: What does spattering of crystals mean
3 answers
Q: What characteristic is an ionic bond
2 answers
Q: Why lime is added to an acidic soil
1 answer
Q: Why carrot is red in colour
1 answer
Q: How do you describe an empirical formula
1 answer
Q: What do hydrocarbon reacts with when fossil fuels are burned
2 answers
Q: Why must care be taken in using radioisotopes for therapeutic purposes
2 answers
Q: Why does an aqueous solution conduct electricity
1 answer
Q: In order for an effective periodic review you should what
2 answers
Q: Why sulphur cannot be ised for making pipes
1 answer
Q: What reacts with carbonates a base or an acid
3 answers
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