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29 Cards in this Set
- Front
- Back
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Which science is primarily concerned with the study of matter and the changes it undergoes?
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Chemistry
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Science is tentative, explanatory, and...
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testable
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Mass is the measure of the...
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amount of matter
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Example of a physical change?
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Ice melting
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Example of chemical change?
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silkworms convert mulberry leaves into silk
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The physical shape that retains both shape and volume?
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Solid
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A gas is characterized by...
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indefinate shape and volume
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Vinegar is made of acetic acid and water...which is the best classification of vinegar...element, compound, or mixture?
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Mixture
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What is a substance that cannot be broken down by chemical means into simpler substances?
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Element
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Which of the following cannot be the chemical symbol for an element? Co, Cf, B, CU
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CU
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Which one of the following symbols represents an element? CO He HF NO
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He
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In the SI system of measurement the unit of length is the...
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meter
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The SI unit for temperature is...
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Kelvin
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Heptane is always composed of 84% carbon and 16% hydrogen. This ilistrates which Law?
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Definate proportions
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In a chemical reaction are atoms changed into other atoms, or so they react with other atoms?
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They react with other atoms...they do NOT change into other atoms.
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What is the term for charged atoms?
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Ions
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A cation is a...
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positively charged ion
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Which radiation is emitted from radioactive elements?
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Alpha, Beta, Gamma
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Under conditions of limited O2, C burns to make carbon monoxide. In conditions with unlimited O2 C burns to make CO2. This ilistrates the Law of...
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multiple proportions
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The mass of an electron is smaller or larger than the mass of a neutron?
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Much smaller
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The mass of an electron is smaller or larger than a proton?
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smaller
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The number of protons in an atom is called the...
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Atomic number
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Isotopes are atoms of the same element with different numbers of...
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neutrons
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A vertical column in the periodic table is called a...
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group
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A horizontal row in the periodic table is called a...
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period
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Is Calcium a metal or non-matal?
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METAL
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Name the english school teacher that proposed the atomic theory.
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John Dalton
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Name the mystical chemistry that flourished in Europe during the Middle Age.
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Alchemy
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What is the smallest unit of an element?
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Atom
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