Review
What are atoms? the simplest part of matter the smallest part of matter the smallest particle possible both a and b
What are atoms made of? protons electrons neutrons all of the above
If an atom has an extra neutron, what must be true of that atom? The atom is a different element. The atom is heavier. The atom is negatively charged. The atom is unstable.
How many valence electrons does Be have? 0 1 2 4 none of the above
What does the periodic table help with? seeing patterns of the elements finding atomic number finding the number of electrons an atom has understanding periodic trends - all of the above
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Homework
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Standard(s)
- HS-PS1-1
- Use the periodic table as a model to predict the relative properties of elements based on the patterns of electrons in the outermost energy level of atoms.
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