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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: Why does a can a metal lid open after running hot water over it
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Q: What is the molecular equations sodium bromide and silver nitrate
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Q: Why are atoms of lithium sodium and potassium almost never found alone in nature
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Q: What Percent oxygen at 10000feet altitude
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Q: Is filling a balloon with hot air a chemical or physical change
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Q: What is Weak union
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Q: What are the properties of star
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Q: What is the mixture of mostly nitrogen and oxygen
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Q: What is boron strength
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Q: What does Hydrogen sulfate plus potassium hydroxide yields
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Q: What is the chemical referred to in diagram
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Q: How Write formulas for the following covalent compounds (a) Silicon dioxide (b) Dihydrogen sulfide (c) Boron trifluoride (d) Dihydrogen dioxide (e) Carbon tetrafluoride (f) Nitrogen trihydride.
1 answer
Q: What connects the nitrogen bases to one another what type of bond
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Q: What happens to the water molecules in a beaker as the water that is heated from 10 c to 90c
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Q: What is the number of covalent bonds Hydrogen will make
1 answer
Q: What is the balanced equation for potassium bromide and ammonium chloride
1 answer
Q: What is building a tower of magnetic blocks Physical or chemical change
9 answers
Q: When most substances are heated they....
2 answers
Q: What is the IUPAC name for CH3CH2CH2I
6 answers
Q: How many dots does boron have around it
1 answer
Q: What is This colourless gas is deadly
1 answer
Q: What element is in period 5 group 5
7 answers
Q: Why is it so difficult to melt ionic compounds
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Q: What is the total number of heat absorbed by 100.0 grams of water when the temperature is increased from 30 degrees celcius to 45 degrees celcius
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Q: What physical prpeeties do these substatnces have water oil mercury and alcohol
2 answers
Q: What is the elements in compound for sand
3 answers
Q: When hydrochloric acid is mixed with the base sodium hydroxide the solution becomes very hot. Which conclusion explains why the heat was released
2 answers
Q: Is a Decay of fallen leaves a physical or chemical change
9 answers
Q: How many of the following molecules have sp3d2 hybridization on the central atom SeCl6 XeCl4 IF5 AsCl5
1 answer
Q: What is a similarity and a difference between isotopes of an element
2 answers
Q: How does an electrolytic cell work simple answer
1 answer
Q: In the reaction Mg(s) plus 2H2O(l)Mg(OH)2(s) plus H2(g) what is the oxidation state of Mg in Mg(OH)2(s)
2 answers
Q: What is a nuclecic acid
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Q: If an element has three isotopes with unknown natural abundance percentages what other information is needed to find the average atomic mass of the element
1 answer
Q: If a bromine is far apart and random is it gas
1 answer
Q: What percent of carbon by mass in C17H19NO3
2 answers
Q: How many atoms are in 8O2
5 answers
Q: What is the chemical equation for solid magnesium metal reacts with liquid water to form solid magnesium hydroxide and hydrogen gas
4 answers
Q: Is Copper chloride solution a solid liquid or gas
1 answer
Q: Is co32- ionic or covalent
1 answer
Q: Where can you find Nitrogen monoxide
1 answer
Q: What is the correct nobel gas configuration for Li
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Q: What is a gaseous reactant of cell respiration
1 answer
Q: In a hydrogen ion pump the energy is used to join small molecules together to make larger ones which factor is most likely has the greatest effect of the number of molecules mitochondria can produce
2 answers
Q: Do monomers in sugar polymers are starch molecules
8 answers
Q: Why do people have to be very careful when using ether
1 answer
Q: Is diamond fireproof
1 answer
Q: What is the length of boiling tube
1 answer
Q: Did the atoms attain stability after ionic bonding Explain
1 answer
Q: What type of a respirators should be used for hydrogen sulfide gas
1 answer
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