VARIABLES
MEASUREMENT
ELEMENTS & COMPOUNDS
PHYSICAL/CHEMICAL
STATES OF MATTER
100
This variable is the one thing that changed on purpose...
Independent Variable
100
This piece of equipment is used to measure mass.
Triple beam balance
100
The atomic number of this element is ___________.
17
100
Choose whether the following is a physical or chemical property: Magnetic
Physical
100
The melting point of a substance is the temperature at which the substance changes from a solid to a _______.
liquid
200
What is the DEPENDENT variable (effect) in this experiment?
"Does eating breakfast improve test scores?"
Test Scores
200
Using this piece of equipment is the most accurate way to measure liquid volume.
Graduated cylinder
200
The average atomic mass of Magnesium is _______.
24.305 g
200
Choose the one that is a chemical property.
Magnetism
Size
Color
Reactivity with water
Reactivity with water
200
When molecules in a gas change to a solid, this is called ____________________.
condensation
300
You are testing how the amount you water a plant affects its growth. The INDEPENDENT VARIABLE in this experiment is...
The amount of water
300
The mass (to the nearest whole number) on the triple beam balance is...
290 g
300
There are _____ atoms of hydrogen are found in 2NH3.
6
300
Choose whether the following is a physical or chemical property: Reacts with oxygen
Chemical
300
When a solid directly changes into a gas, it is called ______________.
sublimation
400
These are the variables that should stay the same. They do not get any changes in order to make for a fair test.
Constant Variables
400
The amount of mass (to the nearest whole number) shown is...
437 g
400
The mass number of this atom of Chlorine is ______.
35
400
Physical or Chemical Property: Any characteristic of matter that you can observe without changing the identity of the substances that make it up
Physical property
400
Particles (molecules) in a ______________________ have more energy than the other states of matter.
gas
500
Mr. Pransky wants to see how different surfaces affect how high a tennis ball can bounce. The independent variable is...
The different surfaces
500
The volume of liquid in this graduated cylinder is...
43mL
500
A(n) __________ is a subatomic particle with a negative charge.
electron
500
Physical or Chemical Change: Boiling water
Physical
500
It stays the same.