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Sophmore Year > science vocab > Flashcards

science vocab Flashcards

0
Q

protons

A

positive charge

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1
Q

Atom

A

the basic unit of matter

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2
Q

neutrons

A

neutral

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3
Q

electrons

A

negatively charged

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4
Q

element

A

a pure substance made up of just one type of atom

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5
Q

isotopes

A

atoms of the same element that differ in the number of neutrons they contain

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6
Q

chemical compound

A

a substance formed by the chemical combination of two or more elements in definite proportions

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7
Q

ionic bond

A

formed when one or more electrons are transferred from one atom to another

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8
Q

covalent bond

A

formed when one or more pairs of electrons are shared between two atoms

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9
Q

molecule

A

the smallest unit of most compounds

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10
Q

van der walls forces

A

type of intermolecular interaction in which when molecules are close together, a slight attraction develops between the oppositely charge regions of nearby molecules

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11
Q

polarity

A

positive or negative charges

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12
Q

hydrogen bonding

A

the attraction between a hydrogen atom on one molecule and the oxygen atom of another

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13
Q

cohesion

A

an attraction between molecules of same substance

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14
Q

adhesion

A

an attraction between molecules of different substances

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15
Q

mixture

A

a material composed of two or more elements or compounds that are physically mixed together but not chemically combined

16
Q

solutions

A

a mixture in which all materials are evenly distributed throughout the solution

17
Q

solute

A

the substance dissolved

18
Q

solvent

A

the substance in which the solute dissolves

19
Q

suspensions

A

mixtures of water and non-dissolved material

20
Q

the pH Scale

A

a system of measurements that indicates the concentration of ions in a solution

21
Q

acid

A

a compound that forms H+ ions in a solution

22
Q

base

A

a compound that produces hydroxide ions in a solution

Sophmore Year (65 decks)

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