Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

image

Play button

image

Play button

image

Progress

1/14

Click to flip

14 Cards in this Set

  • Front
  • Back
What is an atom?
The basic unit of matter
Where is the nucleus located?
In the center of the atom
What charge do the following have?
electron?
proton?
neutron?
electron - negative
proton - positive
neutron - neutral
What is a compound?
a substance formed by the chemical combination of two or more elements.
What are the four types of matter?
solid
liquid
gas
plasma
What is a mixture?
a material composed of two or more elements or compounds physically mixed together not chemically.
Give 3 examples of mixtures.
gasoline
salt water
grape juice
The Ph scale begins at 0 and goes to what number?
14
What numbers represent a strong acid on the Ph scale?
0-3
What numbers represent a strong base on the Ph scale?
11-14
What number is neutral on the Ph scale?
7
What makes up an atom?
protons
neutrons
electrons
Why are atoms neutral?
Atoms have an equal number of protons and neutrons. These particles have equal but opposite charges.
How are elements represented?
By a one or two letter symbol.