Periodic Table
What are all of the items called on the periodic table?
Elements
Name one element that makes up air
nitrogen, oxygen, argon, carbon dioxide, neon, helium and methane
What states of water can you find on earth?
Solid, Liquid, Gas
Concrete does not actually dry. What does it do?
it cures
what is the outside of part of your teeth called?
enamel
What is the first element on the periodic table?
Hydrogen
Plasma
What temp does water freeze at in celcius
0
How long does concrete take to fully harden?
name either the second or third layer of a tooth.
dentin, pulp
H2O
Name one kind of cloud
cirrus cumulus stratus nimbus
What temp does water freeze at in fareinheit
32
What is at least one of the three things that a fire needs to burn.
Fuel, oxygen, heat
Acidity in your mouth contributes to cavities. What is the bacteria called that sticks to your teeth?
plaque
What does an element's atomic number represent?
Number of Protons
Why is the sky blue?
Sunlight interacts with gases in Earth's atmosphere, which scatter shorter, bluer light waves in all directions.
covalent bond
What does pH measure
or acidic or basic?
Your body makes this to help neutralize the pH in your mouth.
What is it called when elements combine to make something else?
Chemical Compound
A scientist who observes, explains, and forecasts the earth's atmosphere. A
meteorologist
When a substance repels water (think of the cocoa powder)
hydrophobic
the middle of the ph scale is number 7. What is this considered?
neutral
What element, in small doses, help your teeth stay strong and fight the acidity in your mouth?
Flouride.