Dependent
Variable
Atoms
Scientific Method
Independent Variable
Random
100

What is a Dependent Variable?


What is measured

100

Name the three subatomic particles and their charges

Proton (+)

Neutron (0)

Electron (-)

100

What is a hypothesis?

An educated guess using “if, then”

100

What is an independent variable?

Variable that is changed

100

How many atoms are in H2O?

3 atoms

2 H

1 O

200

A cow is given a growth hormone and then compared to another cow that was not given a growth hormone. Both cows were weighed at 2 years.

Weight of the cow

200

 Explain the difference between a compound and a molecule.

A molecule is two or more atoms

A compound is two or more elements

200

Data measured by qualities

Qualitative

200

Two different cars are traveling at 60 mph.  At a certain point, both cars slam on the brakes.  The distance it takes for each car to stop is then measured.

Type of car



200

Which is the product in this equations?

CaCO3 → CO2 + CaO

CO2 + CaO

300

Mosquito repellent is sprayed on one arm and the other arm is not sprayed. The number of mosquito bites is counted after 2 hours.

Number of bites

300

Which part of an atoms is responsible for creating bonds?

Electrons

300

Data measured in numbers


Quantitative

300

A stapler is used to staple 100 papers, it jams 5 times during the trial. A different brand of stapler performs the same test; it jams 22 times.

Type of stapler

300

What are the four most common elements

Nitrogen

Oxygen

Carbon

Hydrogen

400

One grape is placed in tap water and another grape is placed in salt water. The change in their mass is measured after a day.

The grape’s mass

400

How do you find the number of protons and electrons in an atom?

The atomic number

400

What is a constant/control variable?

Stays the same

400

Two plants are grown using the same light and pots. One plant is given water that has been microwaved and the other plant is given regular tap water. Their height is measured after 2 weeks.

Water

400

What element is most common in human?

Oxygen

500

Pillbugs are placed in a container where they have a choice of a wet or a dry environment.  Researchers record how much time was spent on each side.

Bug’s time on each side

500

Which two are the same element?





D and E


Same number of protons!

500

Define Quantitative and Qualitative

Quantitative -- Numbers

Qualitative -- Qualities 

500

An apple is cut into slices. Half of the slices are sprayed with lemon juice. All slices are stored in a sealed plastic bag. After 4 days, they are observed to see how brown they turned.  

Presence of lemon juice

500
How do you use a ruler?

Count the notches and make sure you have the right units