Has a fixed volume, but takes the shape of the container it is in

Fills the shape and volume of the container it is in

periodic table of the elements

A table of the chemical elements arranged in order of atomic number

A pure substance that cannot be broken down into simpler substances by physical or chemical means and still maintain its original properties

The number of protons in an atom

The weighted average mass of the isotopes of an element

The smallest particle of an element that retains all properties of that element; is electrically neutral and composed of electrons, protons, and neutrons

A subatomic particle in an atom’s nucleus that has a positive charge

A neutral, subatomic particle in an atom’s nucleus

A negatively charged particle that moves through the empty space surrounding an atom’s nucleus

The center of an atom (or ion) that contains protons and neutrons

A number representing the sum of an atom’s protons and neutrons

The counting unit used in chemistry to measure the amount of a substance; equal to 6.02x10^23 representative particles

The mass in grams of one mole of any pure substance, measured in grams per mole (g/mol)

representative particle

An atom, molecule, formula unit, or ion.

A chemical combination of two or more different elements; can be broken down into simpler substances by chemical means and has properties different from those of its component elements

Indicates the numbers and types of atoms contained in one unit of a compound

The ratio of the total mass of an element to the total mass of the compound, expressed as a percent

The percent by mass of each element in a compound

A formula that shows the smallest whole-number mole ratio of the elements of a compound, and might or might not be the same as the actual molecular formula

A formula that specifies the actual number of atoms of each element in one molecule of a substance

The study of quantitative relationships between the amounts of reactants used and products formed by a chemical reaction; is based on the law of conservation of mass

In a balanced equation, the ratio between the numbers of moles of any two substances

A starting substance in a chemical reaction

A substance formed during a chemical reaction

The process by which the atoms of one or more substances are rearranged to form different substances; indicated by changes in temperature, color, odor, and physical state

Basic Chemistry Concepts Flashcards

Student preview

35 questions

Show all answers

1.

FLASHCARD QUESTION

Front

chemistry

Back

The study of matter and the changes that it undergoes.

2.

FLASHCARD QUESTION

Front

substance

Back

Matter that has a definite composition; also known as a chemical

3.

FLASHCARD QUESTION

Front

matter

Back

Anything that has volume and mass

4.

FLASHCARD QUESTION

Front

volume

Back

How much three-dimensional (3D) space matter occupies

5.

FLASHCARD QUESTION

Front

mass

Back

The measure of an object’s resistance to any type of force

6.

FLASHCARD QUESTION

Front

measurement

Back

A comparison between an unknown quantity and a standard

7.

FLASHCARD QUESTION

Front

phase of matter

Back

The different forms that matter can take depending on its temperature and pressure; typically solid, liquid, or gas

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