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Chemistry

Chemistry is the scientific study of the properties and behavior of matter. It is a natural science that covers the elements that make up matter to the compounds composed of atoms, molecules and ions: their composition, structure, properties, behavior and the changes they undergo during a reaction with other substances.

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Q: Is bleach an element compound or mixture
2 answers
Q: A lithium atom that has lost an electron comes near a chlorine atom that has gained an electron what happened
1 answer
Q: The formula for sucrose is CËÂËÃHËÃËÃOËÂËÂ Figure the molar mass of sucrose to the nearest gram
1 answer
Q: The second element in a compound is positive true or false
1 answer
Q: What type of bond is most likely to form between two gold atoms
1 answer
Q: Is the temperature of a luminous flame greater or less than that of a nonluminous flame
1 answer
Q: Why is the symbol for zinc Zn
1 answer
Q: Which one of the following choices is a simple sugar A Glucose B Orange juice C Lactose D Chocolate
1 answer
Q: N-H bond in NH4Cl bond
1 answer
Q: What is the mineral composition of pyrite
1 answer
Q: Which functional group is within the compound shown below. R-OH
1 answer
Q: Comment on the trend in the boiling points of the Noble gas elements and why do boiling points vary in this manner.
1 answer
Q: How many valence electrons are in o
1 answer
Q: What is the potential energy of a 0.5 kg bowl of soup sitting on tray 2 meters above the ground
1 answer
Q: What is the purpose of adding an indicator to an unknown solution
1 answer
Q: What is the molality of a solution made by dissolving 2 moles of NaOH in 6kg of water
1 answer
Q: Which of these factors will not affect reaction rates
1 answer
Q: Honeybee venom is a solution that contains formic acid which gives the venom an approximate pH of 5.0 which substance is more acidic than honeybee venom
1 answer
Q: Will Yellow Bromothymol Blue revert to Green or Blue color after 12 hours
1 answer
Q: Which element is an atom with six protons in the nucleus
1 answer
Q: Indicates the number of atoms of an element in a compound
2 answers
Q: Exothermic reaction reases what kind of energy
2 answers
Q: How do you calculate the number of protons neutrons and electrons of an atom
1 answer
Q: What energy is required to remove an electron from an atom
1 answer
Q: How many grams of sodium are in 3 moles of sodium carbonate Na2CO3 what is the answer to the nearest gram
1 answer
Q: Why does the electrostatic force do inside the nucleus
1 answer
Q: Which ionic compound will lower the freezing point the most of 1 mol of it is added to 1 mol of it is added to 1 L of water
1 answer
Q: The highest number of electrons in the second shell is what
3 answers
Q: Is an element and a compound heterogeneous
1 answer
Q: What causes the reaction rate to decreases as the reaction progresses
1 answer
Q: Which of these has the highest energy
1 answer
Q: Which type of telescope uses a concave mirror
1 answer
Q: What kind of testing can the Bunsen burner be used for
1 answer
Q: What is the pH of a solution with H plus 2.3 10-3
2 answers
Q: Which one of the following is a common acid soap aspirin antacid and washing soda
1 answer
Q: How does salt get from the sea
2 answers
Q: Aluminum will combine with the sulfite ion to form what
1 answer
Q: Does orange juice have more acid than soda
2 answers
Q: What intermolecular force would affect melting point the least
1 answer
Q: What does the rate of law use to determine the rate of a reaction
1 answer
Q: Is freezing an example of an exothermic chemical change
1 answer
Q: A radioactive isotope has a half life of 20 years How many grams of a 6 gram sample will remain after 40 years
1 answer
Q: What reactant is the limiting reagent in a reaction
1 answer
Q: Does a pH of 3.0 or a pH of 6.0 have a greater hydronium ion concentration
1 answer
Q: Minerals that are generally dull not malleable and not ductile and cannot conduct electricity are
1 answer
Q: Do atoms of an element have thesame atomic number
1 answer
Q: Does the entropy of a solid increases when it is dissolved in solvent
1 answer
Q: How does the energy of the core electrons compare with the energy of valence electrons
1 answer
Q: What is the composition of the atom and how the subatomic particles are arranged
1 answer
Q: When an electron drops to a lower level what is the energy of the photon released
1 answer
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