1 Mixtures of substances can be separated based on their properties such as solubility, boiling points, magnetic properties, and densities
1 What techniques can be used to separate mixtures of substances based their properties?
2 Which properties are the most useful in trying to separate mixtures of substances?
3 How much difference must there be among the properties of substances for the properties to be useful in separating the substances?
Relevance and Application:
1 Materials are sorted based on their properties in a variety of applications. For example, water filtration systems rely on the solubility, density, and physical sizes of substances and recycling facilities use the properties of materials to separate substances in single-stream recycling systems.
2 Mining and oil refining processes use properties to separate materials.
3 The kidneys use properties to filter wastes from the blood.
Nature of Science:
1 Ask testable questions and make a falsifiable hypothesis about using properties in perform separations, and design a method to find an answer.
2 Evaluate and critique experimental procedures designed to separate mixtures.
3 Share experimental data, and respectfully discuss inconsistent results.
4 Describe several ways in which scientists would study mixtures, and suggest ways that this has contributed to our understanding of materials.
2 Life Science
1 Individual organisms with certain traits are more likely than others to survive and have offspring in a specific environment
1 What is the relationship between an organism's traits and its potential for survival and reproduction?
1 Stem cells are undifferentiated cells that have potential use in medicine.
2 Cancer is caused by a cell that isn't functioning correctly.
3 Cells can be cultured to benefit humanity.
Nature of Science:
1 Recognize that our current understanding of cells has developed over centuries of studies by many scientists, and that through continued scientific investigations and advances in data collection, we will continue to refine our understanding of cells.
4 Photosynthesis and cellular respiration are important processes by which energy is acquired and utilized by organisms
1 What is the relationship between photosynthesis and cellular respiration?
2 Trace the development of a scientific theory using the theory of plate tectonics.
3 Describe the ethical traditions of science: value peer review; truthful reporting of methods and outcomes; making work public; and sharing a lens of professional skepticism when reviewing the work of others.
2 Geologic time, history, and changing life forms are indicated by fossils and successive sedimentation, folding, faulting, and uplifting of layers of sedimentary rock