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45 Cards in this Set
- Front
- Back
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A substance that is made up of only one type of atom is called an _______.
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Element
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Two or more substances physically combined form a _______.
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Compound
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_______ is the process by which gas becomes a liquid.
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Condensation
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_______ is the process by which a liquid becomes a gas.
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Vaporization
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The _______ liquid is its resistance to flow.
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Viscosity. Liquids with a great deal of viscosity are very resistant to flow.
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_______ is the process by which a solid turns directly into a gas.
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Sublimation
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_______ have definite shape and definite volume.
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Solids
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_______ is the process by which a solid turns into a liquid.
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Fusion
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_______ is the process by which a gas turns directly to a solid.
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Deposition. When water vapor "freezes" onto a cold surface, deposition is taking place.
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_______ is the process by which a liquid becomes a solid.
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Solidification.
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True solids are said to possess _______ structure.
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Crystalline.
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_______ properties depend upon the size of the sample.
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Extensive.
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_______ is a property of metals which allows them to be hammered into thin sheets.
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Malleability.
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_______ properties can only be observed by carrying out a chemical reaction.
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Chemical. To know if something is flammable, we must try to burn it.
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_______ properties don't depend on the size of the sample.
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Intensive.
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_______ properties can be observed without carrying out a chemical reaction.
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Physical. You can see a metal is shiny without trying to carry out a chemical reaction on it.
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_______ changes produce new substances, with new properties.
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Chemical.
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The Law of _______ of Mass states that matter cannot be created or destroyed.
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Conservation.
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_______ is the process of a solid changing directly to a gas, without passing through the liquid phase.
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Sublimation.Dry ice is called "dry" because it never melts into the liquid phase.
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Melting is an example of a change-of-_______ operation.
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State.
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_______ changes do not result in the production of new substances.
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Physical. If I cut a wooden board in two pieces, both pieces are still made of wood.
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_______ energy is the energy required to get a chemical reaction started.
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Activation.
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_______ reactions result in products at a higher energy level.
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Endothermic. Endothermic reactions take energy in, which allows the products to end up with more potential energy than the initial reactants.
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_______ is defined as the ability to do work.
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Energy.
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_______ enerygy is the energy of matter in motion.
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Kinetic.
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The _______ of an object is the amount of space that it takes up.
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Volume.
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The _______ of an object is the amount of matter it contains.
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Mass.
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We find the mass of an object with an instrument called a _______.
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Balance
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The volume of a liquid can be measured in a _______ cylinder.
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Graduated.
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The term _______ refers to how close together a set of measurement are to each other.
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Precision.
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An _______ measurement is close to the "true" or accepted value.
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Accurate.
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The number 40 shows ____ significant digit(s).
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One. In the number 40, 4 is significant, because it is a nonzero digit. The 0 is only a place holder and is not significant.
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The number 602 shows ____ significant digit(s).
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Three. In the number 602, the 6 and the 2 are significant, because they are nonzero digits. The 0 is also significant because it is between two significant digits.
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The number 0.000043 show ____ significant digit(s).
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Two. The number 0.000043 shows two significant digits: the 4 and the 3. All the zeros are placeholders. A zero must be to the right of both a decimal place and a significant digit to be significant.
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An _______ is an atom that has gained or lost one or more electrons.
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Ion
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A _______ is a neutrally charged subatomic particle found in the nucleus.
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Neutron.
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The _______ number of an atome is equal to the number of protons it has.
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Atomic.
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The _______ number of an atom is equal to the total number of protons and neutrons in its nucleus.
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Mass.
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Atoms of the same element with differing masses are called _______.
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Isotopes.
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How many quantum numbers are used to describe each electron ?
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4.
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Which quantum number indicates the sublevel that an electron is found in ?
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The second.
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How many sublevels would the energy level represented by n = 4 be broken up into ?
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4.
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How many orbitals does a p sublevel contain ?
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3.
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How many total electrons can the second energy level hold ?
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8.
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How many sublevels does the second energy level contain ?
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2.
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