A
How many neutrons does carbon have?
12 -6 = 6
What will happen to the mass of a potato chip when you put it in pure water?
Increase
How many electrons can there be in the 2nd energy level?
8
What do we call the whip like tail of some bacteria?
Flagella
Which is the least reactive of the alkali metals?
Lithium
What do we call atoms with different numbers of neutrons?
Isotopes
What gas moves into the blood from the air in the lungs by diffusion?
Oxygen
What part of a cell contains the DNA?
Nucleus
What charge ion do the alkali metals form when they lose 1 electron?
+1
Which halogen is a green gas?
Chlorine
What particles have a tiny mass and a charge of -1?
Electron
What particle has a mass of 1 and a charge of +1?
Proton
Chlorine displaces bromine from a solution of sodium bromide. What two things are formed?
Sodium bromide + Chlorine -->
Sodium chloride + Bromine
What do we call the movement of water from a less to a more concentrated solution through a semi-permeable membrane?
Osmosis
What do we call energy resources that are finite and will run out?
Non-renewable
What part of a cell carries out aerobic respiration to release energy?
MItochondria
What part of a cell carries out photosynthesis?
Chloroplasts
What charge ion do the halogens form when they gain 1 electron?
-1
What cell types can contract?
Muscle
What energy store uses hot rocks underground?
Geothermal
Where in the human body does active transport of glucose take place?
Small intestine
What energy decreases when a catapult is fired?
Elastic
Ek = ?
1/2 mv2
What energy store increases when an object is dropped?
Kinetic
Name a renewable and reliable energy resource.
Tidal
Hydro-electric
Biomass
What gas is made when we burn any fossil fuel?
Carbon dioxide
Calcium has two electrons in its outer shell. What ion does it form?
2+
Oxygen has 6 electrons in its outer shell. What ion does it form?
2-
What part of a cell makes proteins?
Ribososmes
Sodium + Water --> _________ + Hydrogen
Sodium hydroxide