1 November Science 8 Chemical reactions–review and preparation for summative project–the moon today

  • Mindful moment.
  • Review past class in your DSN entry.
  • Read today’s plan in the blogpost.
  • Prepare DSN entry for today.
  • Questions.

Some questions from period 5:

  • More about molecules—how they form—how they are connected
  • More about—
  • How is periodic table organized? (Story of Mendeleev’s discovery/invention of the periodic table)
  • How do we know atoms exist? What is the evidence?
  • How does matter change states?
  • How are electrons related to magnetism?
  • What branches of science are not concerned with matter? (Einstein connected matter and energy.)
  • What about anti-matter?
  • More about the reaction between atoms—how do molecules actually change and how do atoms actually rearrange?
  • How is periodic table organized and why is it organized in that way?
  • (Uncle Tungsten—-Oliver Sacks)
  • How many atoms in a typical human body (how big are atoms?)
  • What is the argument Einstein used to make the connection between matter and energy?
  • What happens with atoms and molecules during dissolving so that they become invisible?
  • How do scientists calculate the number of atoms in an object? (Avogadro’s number).
  • Why are molecules different sizes?
  • How do scientists find out what happens in a chemical reaction? How similar are a professional scientists techniques to the ones we have used?
  • What is the important of a medium (like water) for a reaction to take place?
  • Why do some substances react and some don’t?
  • Are there particles smaller than atoms?
  • Are there extraterrestrial molecules/substances different from terrestrial molecules/substances?
  • Are all atoms of a certain element the same? Yes and no—there are isotopes.
  • Is a chemical change different from a physical change?
  • Difference in reactions in space as compared to earth—check research from space station and shuttle.

Period 7

  • What is matter made of? What is the composition of material objects?
  • What is the difference between ionic bond and covalent bond?
  • How was matter found? What is the history of ideas about matter?
  • Why do some substances react and some do not?
  • How many reactions are there–on earth? in a living thing? involving a certain element–carbon, for example?
  • How are new elements created? (nuclear processes)
  • What is electricity? Is it a state of matter? Is lightning a form of matter called plasma?
  • Are there different kinds of chemical reactions?
  • Are new atoms being built? (Nuclear processes in stars)
  • How is the periodic table related to matter?
  • Why is matter important in your life?

Period 8

Is a rainbow related to matter?

Why is the periodic table arranged the way it is? (Find out how Mendeleev invented the periodic table?)

How are the different states of matter explained?

Is light matter? (Einstein related matter and energy. )

What are the factors affecting how atoms are rearranged into molecules in a chemical reaction?

How are substances investigated–like gases that are not visible?

State of matter of Non-newtonian fluids?

Forms of matter before the big bang? (Weinberg The First Three Minutes) (Cosmology)

What was the problem with the Bohr model? (Quantum mechanics)

Is it possible to produce an absolute vacuum?

What about anti-matter?

  • * * * *

The moon today at 8:00 am–facing in a westerly direction. Moon is very high in the sky:

Standing on south landing M313.

  • * * * *

Share your moon journal.

Share your matter chart.

Discuss Fundamental-questions-about-matter

Summative project.

Selecting a reaction?

Safety–personal and environmental, feasibility, availability

  • Finding the proportions of reactants for a complete reaction.
  • Examining the properties of the products of a reaction.
  • Investigating factors affecting the rate of a reaction.
  • Comparing a family of reactions.
  • Other–with evidence of research and, of course, safety

Description to come after break.

Involves a chemical reactions.

Involves some quantitative aspect.

Involves using the ball and stick models or equivalent.

Involves clear expression of thinking and ideas–scientific argument, scientific theory of matter.

Thoughts.

Some demonstrations.

 

 

 

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