Atoms and Molecules
__________ is anything that has mass and takes up space.
Matter
Atomic number 3
Lithium
Periods run which way?
Horizontal
How many Elements are in Water?
2 Hydrogen & Oxygen
_________ means related to living things "organisms".
Organic
________________ are the smallest unit of matter.
Atoms
Name the Element?
Chemical Symbol Au
Gold
Family / Groups run which way?
Vertical
How many hydrogen atoms are in water?
2- H20
_______ provides an organism with energy.
Carbohydrates
Elements
Name the Element
Atomic Mass 55.845
Iron
How many families are on the periodic table?
18
Humans are made up of more than _____% of water?
60
DNA is made of ____________.
Nucleic Acids
How many Elements are on the periodic table?
118
Which Element is in period 4 Family 2?
Calcium
Group 17 on the periodic table?
Halogens
What is water composed of?
2 Hydrogen Atoms & 1 Oxygen Atom
What are the 3 elements most necessary for life?
Carbon, Hydrogen, Oxygen
Electron has what charge?
(-) Negative Charge
Which Element is in period 5 family 17?
Iodine
Group 2 on the periodic table?
Alkaline Earth Metals
____________ is the rigidity of a liquid caused by the bonds created in its surface?
Surface Tension
______ stores energy for an organism.
Lipids