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The Scientific Method
Metric Melee
Atomic Structure
Properties and Ch-Ch-Changes
Trendy Periodic Table
100
GROW Brand fertilizer is claimed to increase the growing time of plants so that fruits are ready faster. Strawberries in Group A are given generic brand fertilizer, strawberries in Group B are given GROW brand fertilizer.

Identify the independent and the dependent variables.

Independent variable:The type of fertilizer Dependent: The speed plants grow
100
Convert 100 meters to dekameters (Dm) and decimeters (dm)
What are 10.0 Dm and 1000 dm?
100
Protons are located in this part of the atom.
What is the nucleus
100
Breaking glass describes this type of change
What is a physical change
100
Atomic mass ____________ as you go across a period
What is atomic mass increases as you go across a period
200
Ms. Nguyen studies the trend in terms of her level of concentration after drinking coffee. For each half cup that she consumes, her ability to concentrate on reading improves.

Which of the following describes the relationship between coffee intake and level of concentration AND WHY?
a) Direct relationship
b) Indirect relationship
c) No correlation

What is a direct relationship -- as one variable increases, so does another.
200
State what number each root word represents

kilo
hecto
deka
base
deci
centi
milli

What is are 1000, 100, 10, 1, 0.1, 0.01. 0.001?
200
This piece of information on an element gives the element its identity
What is atomic number
200
One clue that a chemical change has occurred would be
What is heat change, smell, precipitate, bubbles, fizz(need to list one)
200
As you go across a period, atomic radius _____________
What is the atomic radius decreases as you go across a period.
300
In the last 20 years, climate change has been tracked by scientists who have heavily recorded data regarding the phenomenon. Although new evidence is gathered constantly, global warming is considered a scientifically-accepted

a) Law
b) Model
c) Theory
d) Hypothesis

What is a theory?
300
Convert 3456.67 mm to km
What is 0.00345667 km?
300
This experiment discovered the positive dense region of an atom, whic contains most of the mass after positive beamed particles were repelled.
What is the gold foil experiment
300
The resistance to flowing is known as what term?
What is viscosity
300
As you go down each row, what you adding? Hint: It makes the atomic radius larger as you go down a group.
What is an energy orbital
400
Ms. Minor and her sister use the leading brand of shampoo. A TV ad for SHINE brand shampoo claims that SHINE can create more luster than the leading competitor. Ms. Minor decides to try SHINE while her sister continues to use their regular shampoo. At the end of 2 weeks of washing, the sisters compare their results.

Who was the control in this experiment?

Ms. Minor's sister (who used the regular shampoo)
400
How is the metric system more useful for science than the English customary system?
The metric system is consistent and built on powers of the number 10. The proportions from one unit size to another remain the same for mass, volume, and distance.
400
This scientist was responsible for the plum pudding model, which states that electrons are evenly dispersed through the positive region of an atom.
Who is JJ Thomson
400
This type of substance contains matter that has the exact same composition.
What is a pure substance
400
The amount of energy required to remove an electron is known as
What is ionization energy
500
Describe the difference between an observation and an inference.
An observation is undeniable data collected by using the 5 senses. Observations cannot be proven "false"

An inference is an educated guess about a phenomenon that is based on prior experience. Inferences can be proven "false" when more information becomes available.

500
What is density and what type of measurements do you need to calculate density?
Density is the measure of how much matter takes up a certain volume. D = m/v (mass/volume) or D = g/L (grams/Liters)
500
This scientist was responsible for the electron cloud model. He debunked an earlier theory by Bohr, who believed that electrons are held in a circular orbit.
Who is Schrodinger
500
When substances dissolve and form a homogenous mixture of sugar and water, the mixture that forms is called a ___________
What is a solution
500
Besides atomic mass, valence electrons, atomic number, and ionization energy, what other trend increases as you go across a period?
What is electronegativity