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Chemistry Questions
CHEMISTRY
HIGH SCHOOL
What does Vitamin D do for the body?A. It transports oxygen to the muscles.B. It converts glucose into energy.C. It controls the way your body uses calcium.D. It effectively rehydrates the system
CHEMISTRY
HIGH SCHOOL
Number of CO2 molecules in 0.0180 mol CO2
CHEMISTRY
MIDDLE SCHOOL
is it possible for a cup of tea and tea pot that is full of tea to have the same thermal energy? explain
CHEMISTRY
MIDDLE SCHOOL
What type of solution is formed when steam from boiling water evaporates into the air
CHEMISTRY
MIDDLE SCHOOL
True or false when elements chemically combine they usually form compounds that have properties that are similar to those of the uncombined elements
CHEMISTRY
HIGH SCHOOL
How does Silicon shape our technological reality
CHEMISTRY
HIGH SCHOOL
Which is a molecule?A. NeB. NaCLC. Trail MixD. graphene
CHEMISTRY
HIGH SCHOOL
The particle that is identical to a high energy electron is known as a(n) _____. alpha particle, beta particle, gamma ray
CHEMISTRY
HIGH SCHOOL
What is the molar mass of a substance
CHEMISTRY
HIGH SCHOOL
A nitride ion has 7 protons, 8 neutrons, and 10 electrons. What is the overall charge on this ion?
CHEMISTRY
HIGH SCHOOL
If you eat foods that are compact and _______, more can fit into your stomach with less discomfort.A. denseB. dryC. puffedD. tasty
CHEMISTRY
HIGH SCHOOL
Which is the best metal to use in an alloy to increase its electrical conductivity?A) AlB) CuC) Fe D) Sb
CHEMISTRY
HIGH SCHOOL
A chemical reaction in which compounds break up into simpler constituents is a _______ reaction.a. combinationb. decompositionc. double replacementd. substitution
CHEMISTRY
HIGH SCHOOL
What particle is emitted in alpha radiation
CHEMISTRY
HIGH SCHOOL
One major goal of the Progressive movementwas to(1) balance the federal budget by decreasingspending(2) provide unemployment insurance to workers(3) limit direct citizen control over government(4) pass laws to help solve economic and socialproblems
CHEMISTRY
HIGH SCHOOL
1 Which best defines concentration?A ratio that describes the amount of solute divided by the amount of solvent or solutionB ratio that describes the amount of solvent or solution divided by the amount of solute C ratio that describes the mass of solute divided by the mass of solvent D ratio that describes the amount of solvent in a solution 2 Which contributes to the dissolution of sugar in water?A the dissociation of an ionic compound in waterB a strong pull of water molecules on an ionic compoundC the dissociation of a polar covalent compound in waterD a strong pull of water molecules on a polar covalent compound
CHEMISTRY
HIGH SCHOOL
What is the mass of a neutron?
CHEMISTRY
HIGH SCHOOL
When nickel combines with fluorine to form nickel (III) fluoride, the charge of the nickel ion isa. Ni1+.c. Ni3+.b. Ni2+.d. Ni4+.
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