Sci Meth
Chem,Isotopes,Bonds
ph & Water
Biomolecules
Wild Card is Back!
100
What step of the scientific method usually comes first?
Observation/Question/Problem
100
Which subatomic particle has a negative charge?
Electron
100
Which pH is neutral?
7
100
Large carbon compounds that make up foods are called
macromolecules
100
What has hands but can’t clap?
a clock
200
The variable that changes because of the independent variable is called the
Dependent Variable
200
What subatomic particles make up the nucleus?
protons and neutrons
200
Why is water considered polar?
Oxygen is slightly negative, hydrogens are slightly positive
200
Which of the following is NOT a monomer?
A. Glucose
B. Cellulose
C. Amino acid
D. Fatty acid
Cellulose
200
I’m tall when I’m young and short when I’m old. What am I?
a candle
300
A student wants to test how the amount of sunlight affects the growth of bean plants.
Write a hypothesis for this experiment in the If… then… format.
If bean plants receive more hours of sunlight, then they will grow taller.
300
Which type of bond involves sharing electrons?
covalent bond
300
Which property of water allows insects to walk on its surface?
Cohesion (Surface Tension)
300
What are the monomers of proteins?
amino acids
300
What has cities, but no houses; forests, but no trees; and water, but no fish?
a map
400
A factor in an experiment that stays the same.
Constant
400
Table Salt (Sodium Chloride, NaCl) is what type of bond?
ionic bond
400
Define Adhesion
Water molecules sticking to other surfaces
400
Which macromolecule is used for long term energy storage?
lipids
400
What has a head and a tail but no body?
a coin
500
What is the control group?
The group in an experiment that does not receive treatment, used for comparison
500
What is the mass number?
40
500
Why does ice float on water?
Ice is less dense than liquid water
500
What is the function of nucleic acids?
store/carry genetic material
500
What has words, but never speaks?
a book
600
A researcher wanted to test how caffeine affects memory. One group of students drank coffee before taking a quiz, while another group did not. The researcher measured their quiz scores at the end.
Identify the independent and dependent variables in this experiment.
IV = Coffee (caffeine or no caffeine)
DV = Quiz score
600
How many neutrons? protons? & electrons?
20 20 20
600
Order these from the most acidic to the most basic:
Blood
Water
Stomach Acid
Urine
Soap
Stomach Acid, Urine, Water, Blood, Soap
600
What molecule is used to break up polymers in hydrolysis?
water
600
People make me, save me, change me, raise me. What am I?
Money
700
What's the point of the control group?
Provide a baseline
700
Carbon-12 and Carbon-14 are isotopes of carbon. What makes them isotopes of the same element?
different # of neutrons
700
A compound that produces hydroxide ions (-OH) in a solution
base
700
What type of reaction is this?
Dehydration Synthesis Reaction
700
How much dirt is in a hole that’s two feet by three feet? None, it’s a hole.
None