Vocab
The smallest unit of matter and is composed of 3 subatomic particles.
Atom
How many protons does the element Neon (Ne) have?
10 protons
What is the first step of the Scientific Method?
Make an observation
Cohesive forces between water molecules create _____________
water's surface tension
A researcher wanted to investigate how different types of fertilizer affect the yield of corn crops. They planted four different plots of corn, each receiving a different type of fertilizer: organic, chemical, mixed, and no fertilizer (control). All plots were kept under the same soil conditions and received the same amount of water throughout the growing season. After harvest, the researcher measured the total weight of the corn produced from each plot to determine which type of fertilizer resulted in the highest yield.
Independent Variable:
Dependent Variable:
Independent Variable: Type of fertilizer (organic, chemical, mixed, no fertilizer)
Dependent Variable: Total weight of the corn produced
A body of knowledge that explains the natural world
Science
Which of the following represents a compound?
Sodium (Na)
Nitrogen Gas (N₂)
Carbon (C)
Iron (Fe)
Nitrogen Gas (N₂)
What is the definition of a hypothesis?
"educated guess" or an explanation that can be tested
What is it called when water molecules stick to one another
Cohesion
Which of the following is not a macromolecule?
Carbohydrates
Water
Lipids
Proteins
Water
A scientific ________ explains the overall phenomena in science and is supported by evidence.
Scientific Theory
How many electrons does Helium (He) have
2 electrons
What do we measure in an experiment or the "responding" variable
Dependent variable
what bonds allow water molecules to bond together
hydrogen bonds
Name 4 of the characteristics of life
Cells, Reproduction, DNA, Growth and Development, Metabolism, Response to the Environment, Homeostasis, Evolution
What you can change or manipulate in an experiment.
Independent Variable
How many neutrons does the element Sulfur (S) have
16 neutrons
In a recent experiment, a group of scientists wanted to determine how the amount of sunlight affects the growth of tomato plants. They set up three different groups of tomato plants in separate areas with varying amounts of sunlight: full sun, partial sun, and shade. Each group received the same amount of water and fertilizer. Over the course of six weeks, the scientists measured the height of the tomato plants every week to see how well they grew under different sunlight conditions.
What is the Independent variable:
What is the Dependent variable:
Independent variable: Amount of sunlight (full sun, partial sun, shade)
Dependent variable: Height of the tomato plants
What is the term for water sticking to other surfaces?
Adhesion
Why do we add an enzyme to a chemical reaction?
To lower the amount of activation energy needed to start the reaction
A scientific ________ summarize what happens under certain conditions, but they don’t explain why it happens.
Scientific Law
How many electrons are in an O²- ion
10 electrons
What are the steps to the scientific method
Make an observation
Ask a question
Form a hypothesis
Test the hypothesis (experiment)
Draw conclusions
Communicate results
Which property of water allows it to dissolve many substances?
Polarity
Name the 4 macromolecules
Carbohydrates, Lipids (fats), Proteins, Nucleic acids