Like this study set? Create a free account to save it.

Sign up for an account

Already have a Quizlet account? .

Create an account

The basic building block of matter


A pure substance containing one type of atom


Atoms are made of

protons, electrons, and neutrons

Protons and neutrons are located in

the nucleus of the atom

Electrons have a ____charge, ___mass.

negative; no

Protons have a ___charge, and a mass of

positive; 1 dalton

Neutrons have ____ no charge and a mass of ___

1 dalton

The periodic table organizes atoms by

atomic number

Vertical columns with the same number of valence electrons


Horizontal columns with the same number of energy levels


The atomic number is equal to

the number of protons

The atomic mass number is equal to the

number of protons and neutrons

In a neutral atoms, the number of protons equals

the number of electrons

To figure out the number of neutrons

subtract atomic mass and the atomic number

Has more or less neutrons than shown on the periodic table


Element that has lost or gained electrons


Ion that has lost electrons is a ___ and has a ___charge

cation; positive

Alkali metals are found in

Family 1

Alkaline Earch metals are found in

family 2

Elements in family 17 are the


Elements in family 16 are the

oxygen family

Family 17 elements have __ electrons in their outer shell


Family 16 have __ electrons in their outer shell


These bonds occur between ions where there is a transfer of electrons

ionic bonds

A compound contains

one or more different elements

the smallest part of a compound


The total charge of a compound must equal


shows the number of atoms and are written after the symbol


To write subscipts

criss cross the charges

shows the number of molecules and are written in front of a formula


Molar mass is found by

multiplying the atomic mass number by the number of atoms of that element

There are __ naturally occurring elements


When radioactive elements decay they give off

alpha, beta, and gamma particles

All elements after 92 are


The breaking apart of an element with the release of energy


the joining of 2 H atoms to form a helium atom with the release of energy as on the sun


Acids turn

litmus red

Name three characteristics of Acids

hydrogen donors, taste sour, are corrosive

Name 4 characteristics of bases

hydrogen acceptors, feel slippery, used in soaps, dissolve fats

Bases turn

litmus blue and phenolpthalein pink

an ion that has gained electrons in an ____ and has a __ charge

anion; positive

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions and try again


Reload the page to try again!


Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

Voice Recording