Scientific Method
If you were running an experiment to determine the temperature at which beans sprout the fastest, what would be the independent variable?
The temperature
What is it called when a gas changes to a liquid?
Condensation
Peter places six pieces of modeling clay on one side of a balance. He places a plastic cup on the other side. It takes 41 plastic cubes to balance the modeling clay. He then removes the clay, shapes it into a dinosaur, and puts it back on the balance scale. How many cubes will he most likely need to put into the cup to balance the dinosaur?
41 cubes
an increase in the rate of speed of something
acceleration
Which of Newton's Laws of Motion also is known as the Law of Inertia?
Newton's 1st Law
The results of an experiment are called...
the conclusion
The smallest part of matter is made up of:
ATOMS/MOLECULES
What is the role of the solvent?
It dissolves the solute in a mixture.
Which of Newton's Laws of Motion also means that heavier objects need more force to move them?
Newton's 2nd Law
the speed of something in a given direction is called
velocity
Scientists can change their data so that it supports their hypothesis.
FALSE
A snowflake cookie weigh 10 grams. It was broken into 5 pieces. Describe the weight of all 5 pieces.
What is 10 grams or the same?
What are 2 ways that you can make a solute dissolve faster into a solvent?
Shaking/stirring, breaking into smaller pieces, or increasing the temperature
What mathematical formula can be used to represent Newton's Second Law of Motion?
F = ma (Force = mass x acceleration)
ice melting is an example of what type of change
a physical change
What are dependent variables?
The results I observe that are changed based on the independent variable.
The change cannot be undone shows that it is this type of change.
Chemical Change
What type of mixture is also a solution?
Homogeneous
A swimmer is moving at a speed of 2.0 meters/second. How long will it take for the swimmer to go 100 meters?
50 seconds
Name 3 of the 5 ways to make an observation?
taste, touch, smell, see, hear
When you have finished testing and drawing conclusions, what should scientists do last?
Report their results
A jar with 500 g of water with the lid on sits in the window. What will the mass be after one month?
500g
A student adds three drops of green food color to a glass of water.
Explain how adding food coloring effects the freezing point of the water.
It does not affect the freezing point of water.
What are the two things that effect gravtiy?
Mass and distance
What does heterogeneous mean?
a mixture that is a physical change
a mixture that can be easily separated
a mixture that keeps its properties
a mixture that you can see the substances