Section 1

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chemical

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Last updated

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Date created

Mar 14, 2020

Cards (44)

Section 1

(44 cards)

chemical

Front

a substance used in or formed by a chemical process; a substance that has a definite composition

Back

specific heat

Front

the amount of of energy it takes to raise the temperature of 1 g of a substance by 1 degree celsius

Back

matter

Front

anything that has mass and volume

Back

nucleus

Front

the central part of an atom

Back

atomic mass

Front

a mass of an element that is equal to the umber of protons and neutrons in the nucleus of one atom of the element

Back

density

Front

mass divided by volume

Back

the octet rule

Front

main-group elements tend to combine in such a way that each atom has eight electrons in its valence shell, giving it the same electronic configuration as a noble gas.

Back

electron

Front

a particle that has a negative charge and orbits the nucleus of an atom

Back

atom

Front

the smallest unit of an element; basic building block of matter

Back

property

Front

any characteristic that can be used to identify and describe matter

Back

insulator

Front

material that does not allow electricity or heat to flow through it easily

Back

boiling point

Front

the temperature at which gas bubbles form in a liquid and rise to the surface to escape the liquid as a gas

Back

periodic table

Front

a chart that organizes information about all of the known elements according to their properties

Back

mixture

Front

matter made up of 2 or more substances that are combined physically

Back

oxidation

Front

a chemical reaction that occurs when a substance reacts with oxygen

Back

concentration

Front

the amount of a substance in a given volume

Back

valence electrons

Front

electrons in the the outermost energy level of an atom; the number and arrangement of valence electrons determine how atoms combine with each other to form compounds

Back

volume

Front

the space an object occupies

Back

nonmetal

Front

an element that does not conduct electricity or heat and is usually a gas at room temperature

Back

conductor

Front

a material or substance that allows electrons to flow through it easily

Back

chemical bonds

Front

forces that hold atoms together

Back

law of conservation of mass

Front

matter is neither created nor destroyed during a chemical change

Back

metalloid

Front

an element that has some properties of a metal and some properties of a nonmetal

Back

solubility

Front

the measure of how much of a substance dissolves in a given amount of another substance

Back

evaporation

Front

can be used to separate a solid from a liquid in solution

Back

chemical property

Front

a characteristic that describes how the matter will change under certain conditions

Back

law of conservation of matter

Front

a scientific law that states that during a chemical reaction, matter cannot be created or destroyed but can be changed into a different form

Back

electron cloud

Front

the region surrounding the nucleus of an atom where the electrons are located

Back

solute

Front

what is dissolved in a solution

Back

melting point

Front

the temperature at which a solid changes into a liquid

Back

neutron

Front

a particle that has no charge and is found in the nucleus of an atom

Back

inert

Front

unable to react chemically

Back

atomic number

Front

the number of protons an element has in its nucleus

Back

element

Front

a substance that cannot be broken down into a simpler substance by ordinary chemical means

Back

period

Front

the horizontal row of elements on the periodic table

Back

pure substance

Front

matter that has the same chemical composition throughout

Back

group

Front

the vertical column of elements on the periodic table that contains elements having similar properties; sometimes called a chemical family

Back

solvent

Front

a substance in which another substance dissolves

Back

chemical formula

Front

the method of using chemical symbols and subscripts to identify the number of atoms of each element in a molecule or a compound

Back

solution

Front

a substance made by dissolving one substance so that the two substances are evenly mixed

Back

proton

Front

subatomic particle with a positive charge, found in the nucleus

Back

compound

Front

a type of matter that forms when two or more elements combine chemically

Back

molecule

Front

the smallest unit of a compound that has all the properties of the compound

Back

physical change

Front

a change in a substance that does not involve a change in the identity of the substance

Back