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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 Zn plus CuCl2 yields ZnCl2 plus Cu a redox reaction
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Q: How do atomic radii change as electrons are added to a shell
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Q: Should you never change a subscript to balance an equation
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Q: When would dipole dipole be significant
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Q: What is true of catalyst
2 answers
Q: What is the formula for potassium and oxygen to give potassium oxide
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Q: Difference between evaporation and boiling
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Q: How do the light reaction help the Calvin cycle
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Q: What is the electronegativity of NaCl
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Q: What is the complete ionic equation for NaOH plus HC equals H2O plus NaCl
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Q: Is it right all Arrhenius bases are Brownsted Lowry bases
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Q: Choose the correct formula for this compound silver oxalate
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Q: Which of these method does not form base
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Q: What type of property is exhibited when when glass tubing is heated over the flame
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Q: What the element with the highest first ionization energy in group 14
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Q: Calculate the number of moles in 27.50 grams CaCOËÄ Type the correct answer then press Enter
1 answer
Q: Which electrons are the valence electrons of the atom
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Q: What phases of matter gives off light
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Q: Is a solid a substance
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Q: What is the correct compound name for compound CaO
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Q: Which elements atomic nucleus contains 11 protons
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Q: What is a characteristic of the lanthanides
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Q: Which of the following best defines sense of self
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Q: Convert 75ô C to the kelvin scale
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Q: Predict the product of this compound ZnO plus COea æ
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Q: What are the products of this chemical reaction HCI reacts with solid NaOH
2 answers
Q: How many electrons does iodine have in its outer ring
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Q: What is the difference between a strong base and a weak base
6 answers
Q: What is the molality
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Q: What is the oxidation number for NaClO3
2 answers
Q: DID OXIDATION AND REDUCTION PROCCED SIMULATANEOUSLY
2 answers
Q: What is the density of a black of wood with a mass of 120 g and a volume of 200 Cm3
1 answer
Q: What happens to the pH if a small amount of strong acid is added to an non buffered solution
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Q: How many possible isomers of heptane are there
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Q: What can be said about a reaction with h=-890 kj/mol and s = -0.24 kj/mol
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Q: Is melting point a extensive or a intensive property
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Q: When white light is broken down into a rainbow of colors what color is located between green and indigo
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Q: What does the term spontaneous mean in a chemical reaction
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Q: The total number of naturally occurring elements that has been identified is- 92 118 or 126.
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Q: What causes an ionic bond form
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Q: The splitting of a heavy nucleus is called
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Q: The periodic law states that the properties of elements will repeat when the elements are arranged by _______.
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Q: Which bonds are metallic bonds similar to
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Q: What is used to help water wash way greasy dirt
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Q: What is the net ionic equation for the reaction 2kohaq h2so4aq 2h2ol k2so4aq
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Q: Which one is an example of an indicator litmus paper electricity high concentration or presence of H- ions in solution
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Q: A decomposition occurs when a substance is broken down into two or more simpler substances in a chemical reaction.
1 answer
Q: What is a solution Apex chemistry
1 answer
Q: What drives the ATP synthase reactions that produce ATP
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