Set: Modern Chem 1

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All 43 Terms

Term Definition
Chemistry The study of the composition, structure, and properties of matter, the processes that matter undergoes, and the energy changes that accompany these processes
Instruments Routinely used in chemistry to extend our ability to observe and make measurements
Chemical Any substance that has a definite composition
Technological Development the production and use of products that improve our quality of life
Applied Research Researchers are driven not by curiosity or a desire to know but by a desire to solve a specific problem
Basic research carried out for the sake of increasing knowledge, such as how and why a specific reaction occurs and what the properties of a substance are
Volume the amount of three-dimensional space and object occupies
Mass a measure of the amount of matter
Matter anything that has mass and takes up space.
Matter made up of atoms and molecules
Atom the smallest unit of an element that maintains the chemical identity of that element
Element a pure substance that cannot be broken down into simpler, stable substances and is made of one type of atom
Compound a substance that can be broken down into simple stable substances and is made from the atoms of two or more elements that are chemically bonded
Molecule the smallest unit of an element or compound that retains all of the properties of that element or compound
Properties characteristics that define an entire set of substances and classify unknown substances
Extensive properties depend on the amount of matter that is present (volume, mass, energy)
Intensive properties do not depend on the amount of matter present (melting point, boiling point, density)
Physical property a characteristic that can be observed or measured without changing the identity of the substance (melting and boiling points)
Physical change a substance that does not involve a change in the identity of the substance(cutting, melting, and boiling)
A change of state a physical change of a substance from one state to another – solid, liquid, and gas
Matter in the solid state definite volume and definite shape
Matter in the liquid state definite volume but an indefinite shape
Matter in the gas state neither definite volume nor definite shape
Plasma a high-temperature physical state of matter in which atoms lose most electrons, particles that make up atoms
A chemical property a substance's ability to undergo changes that transform it into different substances.
Chemical change a change in which one or more substances are converted into different substances
Reactants the substances that react in a chemical change
Products the substances that are formed by the chemical change
Mixture a blend of two or more kinds of matter, each of which retains its own identity and properties.
homogeneous or solution some mixtures are uniform in composition and have the same proportion of components through-out
heterogeneous mixtures are not uniform throughout
Mixtures can be separated by filtration or vaporized to separate the different components
A pure substance has a fixed composition and differs from a mixture since it has same characteristic property and composition.
periodic table the elements are organized into groups based on similar chemical properties
Groups or families the vertical columns of the periodic table
periods the horizontal rows of elements in the periodic table
A metal an element that is a good electrical conductor and a good heat conductor
Malleability they can be hammered or rolled into thin sheets
Ductile they can be drawn into fine wire
high tensile strength the ability to resist breaking when pulled
Non-metals gases at room temperature, and are poor conductors of heat and electricity
A metalloid an element that has some characteristics of metals and some characteristics of non-metals.
noble gases the elements in Group 18 of the periodic table that are generally unreactive

Set Information

Terms 43
Creator flowerpower11
Created September 18, 2008
Groups None
Subject chemistry
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Most Missed Words

  1. Malleability → they can be hammered or rolled into thin sheets - 6 misses
  2. A pure substance → has a fixed composition and differs from a mixture since it has same characteristic property and composition. - 4 misses
  3. Intensive properties → do not depend on the amount of matter present (melting point, boiling point, density) - 3 misses
  4. Mixtures → can be separated by filtration or vaporized to separate the different components - 3 misses
  5. A metalloid → an element that has some characteristics of metals and some characteristics of non-metals. - 2 misses
  6. high tensile strength → the ability to resist breaking when pulled - 2 misses
  7. Molecule → the smallest unit of an element or compound that retains all of the properties of that element or compound - 2 misses