Dependent - if the egg cracks or not
Constants - type of egg, treatment of egg, surrounded or plain egg, date you bought the egg
chemical - burning, rotting
unintended consequence - corn prices, decreased corn crops
Compound - multiple elements BONDED together
Mixture - easily separated by PHYSICAL means
liquid - closely packed, no set pattern, slide past one another
gas - no pattern, bounce around, fill entire space
a. The student uses a horseshoe magnet instead of a bar magnet
b. The student moves the bar magnet through the copper wire coils
c. The student insulates the copper wire with plastic
a. build a prototype
b. define the problem
c. decide on the best improvement
behavioral - the way an animal acts that helps it survive in its environment
Products - on the right
Oxygen - 20%
a. Magnetic field lines for both Earth and a bar magnet are generated from convection currents
b. Magnetic field lines around Earth are symmetrical but magnetic field lines around a bar magnet are not symmetrical
c. Magnetic field lines for both Earth and a bar magnet emerge from the north pole
What most likely caused the population to increase?
a. The concentration of insecticide was too great, and therefor biodiversity was reduced.
b. Due to genetic variation, the farmer sprayed too much insecticide on his crops.
c. Due to genetic variation, the insect population adapted to the insecticide
Base - bitter, corrosive, pH greater than 7
Atomic Number 19, Atomic Number 55, and Atomic Number 87
a. They are in the same period and they are all very reactive
b. They all have one valence electron and they are very reactive
c. They all are alkaline-earth metals with three valence electrons
Weight - the amount of gravitational force exerted on an object, spring scale
A student wanted to find out if marbles with larger diameter made deeper craters when dropped into wet sand than marbles with smaller diameters. The following shows the student's data
Marble Diameter Marble Mass Height Drop Marble Crater Depth
1 13 21 2 4
2 14 18 2 3
3 15 23 2 6
4 16 20 2 5
The student concluded marble diameter had no affect on crater depth. Which is most likely the reason this conclusion is flawed?
a. The student should have used more marbles that had the same mass
b. The student should have used more than four marbles
c. The student should have dropped the marbles in flour instead of sand
Importance (varies)
a. Combining 2g of copper and 4g of sulfur to produce 6g of copper sulfate
b. Using filter paper to separate 2g of solid from 10g of water
c. Burning 2kg of wood, leaves 0.4kg of ash
More mass = more gravity
More distance = less gravity