Chemistry Vocabulary

Chemistry Vocabulary

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Section 1

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flammability

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Date created

Mar 1, 2020

Cards (37)

Section 1

(37 cards)

flammability

Front

A material's ability to burn in the presence of oxygen

Back

proton

Front

A subatomic particle that has a positive charge and that is found in the nucleus of an atom

Back

reactive

Front

Capable of readily undergoing a chemical change.

Back

transition metals

Front

Groups 3-12, 1-2 electrons in the outer energy level, less reactive than alsali-earth metals, shiny, good conductor of thermal energy and electrical current, high density

Back

Noble Gases

Front

Group 18, nonreactive because there outer energy level is full of valence electrons

Back

solubility

Front

The ability to dissolve in another substance

Back

chemical property

Front

A property that describes the ability of a substance to react with other materials and form new substances.

Back

atomic number

Front

The number of protons in the nucleus of an atom

Back

atomic mass

Front

# of protons + # of neutrons, The average mass of all the isotopes of an element

Back

physical change

Front

A change of matter from one form to another without a change in chemical properties. solid, liquid, gas

Back

periods and groups

Front

Periods are the horizontal row (increasing mass), groups are the vertical columns (similar characteristics, also known as families)

Back

coefficient

Front

A number in front of a chemical formula in an equation that indicates how many molecules or atoms of each reactant and product are involved in a reaction.

Back

heterogeneous mixture

Front

A mixture in which different materials can be distinguished easily, can be separated

Back

alkaline earth metals

Front

metallic elements in group 2 of the periodic table which are harder than the alkali metals and are also less reactive

Back

atom

Front

Basic unit of matter

Back

mixture

Front

A combination of two or more substances that are not chemically combined

Back

alkali metals

Front

Group 1, 1 electron in outer level, very reactive, soft, silver, shiny, low density; Lithium, Sodium, Potassium, Rubidium, Cesium, Francium

Back

nonmetal

Front

Element that is usually a gas or brittle solid at room temperature and is a poor conductor of head and electricity.

Back

valence electron

Front

The electrons in the outermost shell (main energy level) of an atom; these are the electrons involved in forming bonds.

Back

Law of Conservation of Mass

Front

the law that states that energy cannot be created or destroyed but can be changed from one form to another

Back

molecule

Front

Two or more atoms combine, The smallest particle of a substance that retains the chemical and physical properties of the substance

Back

element

Front

A pure substance made of only one kind of atom, can't be broken down into simpler substances

Back

nonreactive

Front

Not capable of readily undergoing a chemical change.

Back

metalloid

Front

Elements along the staircase. Have properties of both metals and nonmetals. Ex: Silicon

Back

compound

Front

A pure substance made of two or more elements CHEMICALLY combined.

Back

physical property

Front

A characteristic of a pure substance that can be observed without changing it into another substance

Back

metal

Front

an element that is shiny and that conducts heat and electricity well

Back

chemical change

Front

A change in matter that produces one or more new substances

Back

density

Front

A physical property. Specific to every element. Mass / Volume

Back

balanced chemical equation

Front

A Chemical equation with the same number of atoms of each element on both side of the equation; The balancing process involves changing coefficients in a reaction to achieve

Back

electron

Front

A subatomic particle that has a negative charge

Back

homogenous mixture

Front

A mixture in which materials are blended evenly so theat the mixture is the same throughout; also called a solution

Back

product

Front

A substance produced in a chemical reaction

Back

polarity

Front

The type of charge an atomic particle has. molecules have positive and negative sides

Back

neutron

Front

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

Back

subscript

Front

A number written slightly below and to the right of a chemical symbol that shows how many atoms of an element are in a compound.

Back

reactant

Front

a starting substance in a chemical reaction

Back