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

1/15

Click to flip

15 Cards in this Set

  • Front
  • Back
what are the four elements essential to life and just how much do they make up of the living matter?
Nitrogen,Oxygen,Carbon,Hydrogen. They make up 96% of all living matter.
What are the other major elements although in minute quantities that are essential to life?
Phosphorus,Sulfur,Calcium,Pottassium make up the other 4% of all living matter. P,S,Ca,K.
What is the symbol for oxygen
O
Atomic number for oxygen?
8
Percentage of Human body weight for oxygen?
65%
What is the symbol for Carbon?
C
Atomic number for carbon?
6
Percentage of human body weight for carbon?
18.5%
What is the symbol and atomic number for hydrogen?
H and 1.
percentage of human body weight for hydrogen/
9.5%
what is the symbol and atomic number for nitrogen?
N and 7.
percentage of human body weight for nitrogen?
3.3
what is the symbol and atomic number for Calcium.
Ca and 20.
percentage of human body weight for calcium?
1.5%
What is the symbol and atomic number for phosphorus?
P and 15.