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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: Repression is the process
1 answer
Q: What are atoms either a positive or negative charge called
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Q: What type of chemical reaction occurs when polymers are broken apart by water.
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Q: Can carbon monoxide be involved in the extraction of iron from hematite
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Q: What coefficent values will balance the reaction Cog plus o2g equals co2g
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Q: How do you determine the core electrons an atom has
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Q: What is the molarity of a solution of 1divided2 mol of Cu NO3 2 in 1divided2 L water
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Q: Did An English scientist created the first periodic table of elements
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Q: Do dynamic levels always stay the same for the entire piece
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Q: What is a row of houses all joined together called
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Q: What is the standard reduction potential E for the half-reaction Mg2 2e- Mg
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Q: What happens to a solute when a solution is made
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Q: Electrons are the smallest particle of an element that retains the original characteristics of the element
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Q: A solution if hydroflouric acid HF(aq) is at the equilibrium how would the system change if more Hf were added to the solution
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Q: How is the name of the second element in a covalent molecule change
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Q: How is the Bohr atomic model different from the plum-pudding model
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Q: A double-displacement reaction occurs when the positive ion of one compound replaces the positive ion of the other compound to form two new compounds during a chemical reaction.
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Q: What do radio telescopes use to gather and forces radio waves
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Q: Matter comes in many phases. What are they
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Q: What is a polar molecule made from 1 oxygen and 2 hydrogen atoms that is required by all living things
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Q: How many blank spaces were in Mendeleev's periodic table
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Q: How many significant figures are in the measurement 811.40 grams
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Q: What is an atom that has single electrons in the outermost shell
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Q: What heat transfer associated with a chemical reaction or pharse changs as either exthermic or endothermic
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Q: The white powder used to line baseball football and soccer fields is a product of the reaction between calcium oxide and water. What is the formula of this familiar powder
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Q: What is the molarity of 2 moles of a compound dissolved in4L of water
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Q: How is an equilibrium constant expressed
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Q: How would the equilibrium concentration of H2O be affected by adding a catalyst to the mixture
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Q: How many significant digits in this number 0.00909
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Q: What information does a phase diagram give
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Q: How many atoms in a molecule of carbon
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Q: What is the correct chemical name for a compound with the formula NI3
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Q: Which substance is the most acidic
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Q: Which of the follwing would form a nonelectrolyte solution in water
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Q: What do you call an agreement between different companies to charge the same amount for products
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Q: Homogeneous mixture
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Q: Metallic bonds are formed from the sharing of valence electrons.
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Q: What will happen if you heat a few grains of clean sand in a test tube
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Q: Is ice as dense as water
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Q: Why do metal salts in solution give off colors in flames
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Q: What is the Best summary of kinetic theory
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Q: Select the skeleton equation
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Q: How many electrons does an atom or Lead have
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Q: What must be present for a group to be considered a nation
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Q: What kind of macromolecule is made from amino acids
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Q: What are two properties of amorphous soild
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Q: What is the correct electron configuration for Si atomic number 14
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Q: What is an example that shows that the combustion of methane produces 802 kJmol of energy
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Q: Which term describes the describes the disorder of random molecular motion
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Q: What part of a potential energy diagram reveals the enthalpy of a reaction
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