Which weighs more, a pound of feathers or a pound of gold.
Niether, they both weigh a pound.
100
"H" is the first element on the periodic table of the elements. What does it stand for?
H stands for hydrogen.
100
What are the names of the 3 subatomic particles that make up an atom? (Think Pen!)
Protons, Neutrons,and electrons
100
Describe the 3 states of matter that we most commonly find on Earth.
Solid,Liquid, Gas
100
Name 3 kingdoms
Animals,Plants,Fungi, Moneran, Protist
200
What happens to weight when you go to a smaller moon or planet?
Weight decreases.
200
What is the chemical formula for water?
H2O
200
Which of the 3 subatomic particles does not have an electrical charge?
Neutrons
200
What is the fourth state of matter,found mostly in stars.
Plasma
200
What is the name forthe processof turning sunlight into sugars (food energy)
Photosynethesis
300
What happens to mass if you go to a larger planet? (Think carefully!)
Nothing. Mass always stays the same.
300
What is the building block of elements?
Atoms
300
What do you get if you changed the number of electrons on a balanced atom?
An ion
300
On the celcius scale,at what temperature does water freeze? At what temperature does it boil?
0 and 100 degrees
300
In terms of the gasses in the atmosphere, why do plants and animals need each other?
Because animals exhale carbon dioxide and in hale oxygen, whileplants do the opposite.
400
What is the name for the quanity which is "mass per unit of volume?"
Density
400
What is the difference between O and o2?
O2 is a pair of oxygen molecules bonded together by sharing electrons.
400
What do you get if you change the number of protons in an element?For example, what happens if you add a proton to Hydrogen?)
A different element (adding a proton to hydrogen makes it Helium.
400
Which form of matter keeps a constant volume but not a constant shape.
Liquid
400
What is the name for the rigid structure outside ofplants cellmembranes?
The Cell wall
500
What is the difference between chemistry and physics?
Chemistry is the study of matter interacting with other matter; physics is the study of matter interacting with energy.
500
Aboput how many elements do we have on periodic tables?
105-115
500
What happens when you change the number of neutrons in an element?
You form a different isotope.
500
On a scientific level, what is really going on when we heat something up?
We are increaqsing the speed the molecules are moving at.
500
What type of organelle comes in both 'rough'and 'smooth' varieties, and provides structure and workspace for other organelles. It is 2 long words. The first word starts with a vowel.