Scientific Method
What is the first step of the scientific method?
Make an observation or Ask a question.
Which sphere contains Earth’s oceans, rivers, and groundwater?
Hydrosphere
What is the smallest unit of matter?
Atom
Which bond forms when electrons are shared between atoms?
Covalent
Fish, nuts, and olive oil are rich in healthy fats. These belong to which macromolecule group?
Lipids
An Educated guess in an experiment is called a:
Hypothesis
Soil, rocks, and mountains belong to which sphere?
Geosphere
Which of the following is an element?
a) H₂O
b) CO₂
c) O₂
d) NaCl
O₂
Which bond forms when electrons are transferred from one atom to another?
Ionic
Bread, pasta, and rice (starches) are mainly made of which macromolecule?
Carbohydrates
Which part of the scientific method involves comparing your results to your prediction?
Conclusion
Humans, plants, and animals are part of the:
Biosphere
Two or more atoms bonded together form a:
Molecule
The sugar in fruit (C₆H₁₂O₆) is held together by atoms sharing electrons. What kind of bond is this?
Covalent
Eggs, chicken, and beans (proteins) are good sources of which macromolecule made of amino acids?
Proteins
The variable that you change in an experiment is the:
Independent variable
Which sphere provides oxygen for living organisms to breathe?
Atmosphere
A substance made of two or more different elements chemically combined is a:
Compound
H2O has how many atoms?
3
Avocados, butter, and oils (fats) are high in which macromolecule?
Lipids
Why are repeated trials important in experiments?
To reduce errors and increase reliability
A hurricane impacts the atmosphere (wind), hydrosphere (rain), geosphere (erosion), and biosphere (flooded homes). This is an example of:
Sphere interaction
Which subatomic particle has a positive charge?
Proton
The chemical formula C8H18 has how many elements
2
Which macromolecule stores DNA information?
Nucleic acids