Experimental Design
What is the item that changes in an experiment?
Independent variable
What is the freezing point of water in SI units?
0 degrees Celsius
Which particles are located in the nucleus?
protons and neutrons
What tool is used to measure mass?
triple beam balance
Which type of heat transfer is happening when someone is getting warm by sitting by a campfire?
radiation
What are the items that stay the same in an experiment?
constants
What is the coldest possible temperature?
0 K
absolute zero
An element's identity is determined by the number of ____________.
protons
What is the unit when measuring liquid volume?
liters
Which type of heat transfer is happening when heating units are placed on the lowest level of a house?
convection
You want to see if adding fertilizer to plants will increase their growth.
What is the dependent variable in this experiment?
plant growth
What is it called when a gas changes to a liquid?
condensation
Who discovered the electrons?
Thomson
What is the unit when measuring mass?
grams
Which type of change is occurring when a car is rusting?
chemical change
The independent variable goes on which axis on a graph?
x axis
Heat always move from a _______ substance to a _____________ substance.
warmer/cooler
What is a row called on the periodic table?
period
What is the measure of the amount of space an object takes up?
volume
What kind of substance is CO?
compound
A student wanted to see which object would land first when dropped from a five-story building. The student wanted to test a stick, a rock, a feather, and a marble.
What is the independent variable in this experiment?
The item being dropped
What happens to the temperature of an ice cube when it is in the process of melting?
stays the same
What is the name of the group that only has one valence electron?
alkali metals
What tool would you use to measure the volume of a piece of gravel?
a graduated cylinder
What kind of substance is in this image?
(Mrs. Brinkley will need to show this to you)
an element