Safety Symbols
State and Matter
Biology
Chemistry
Identifying variables
100
what is this Symbol
Fire Hazard Sign
100
What is it called when a liquid changes to solid
Freezing
100
what is the difference between plant and animal cell
Plant cells have a cell wall in addition to a cell membrane, whereas animal cells have only a cell membrane.
100
what does Oxygen and hydrogen make?
water or hydrogen peroxide
100
what is the independant variable from this experiment?
Scientists conducted a study of how much light affects the growth of a plant in 30 minutes
the amount of light
200
what is this Symbol
Biological Hazard
200
What is it called when solid turns to liquid
melting
200
how does plant cells reproduce
by constructing a new cell wall (cell plate) between daughter nuclei after mitosis.
200
what forms when you combine 1 atom of magnesium and 1 atom of sulfur?
Magnesium Sulfide or MgS
200
define an independant variable
it is the thing you change in an experiment
300
What is this safety Symbols
Hot Surface
300
what is the only matter that can be compressed?
Gas
300
In an animal cell, what structure controls what enters and exits the cell?
Cell membrane
300
what is the 14th element on the periodic table
Silicon
300
define a dependant variable
it is something you measure in an experiment
400
What is this Symbol
Explosive Material
400
What is it called when Gas turns to Liquid
condensation
400
what is a part of the cell that only exists in an animal cell?
centrosomes
400
What comes after boron on the periodic table
Aluminium
400
define a controlled variable
it is something that stays the same while you do the experiment
500
What is this Symbol
Lazer Radiation
500
what is it called when liquid turns into gas
evaporation
500
What is the purpose of the cell wall in plant cells, and why is it not found in animal cells?
What is the purpose of the cell wall in plant cells, and why is it not found in animal cells?
500
what is the strongest/toughest element on the periodic table?
Tungsten
500
The student places 3 plants in different locations: one in full sunlight, one in partial sunlight, and one in no sunlight (in a dark room). The student measures the height of the plants every week for a month.
a) Identify the independent, dependent, and controlled variables in this experiment.
b) Why is it important to control variables in this experiment?
a) the independant variable is the amount of light, the dependant variable is the plant growth and the controlled variable is the type of plant and where it starts
b) to keep the results fair and true