NGSS
HS-PS1-2
24 lessons teach this standard. Every lesson is interactive, and every one prints as a worksheet with a separate answer key.
Physical Science · Chapter 3 · Lesson 3
The outer shell decides almost everything.
Physical Science · Chapter 3 · Lesson 4
More protons and the atom gets smaller.
Physical Science · Chapter 3 · Lesson 5
The table lets you predict an element you have never met.
Physical Science · Chapter 4 · Lesson 1
Two names for the ends of one scale.
Physical Science · Chapter 4 · Lesson 2
A formula you can read is a formula you can predict.
Physical Science · Chapter 4 · Lesson 4
The pattern tells you the products before you run it.
Environmental Science · Chapter 7 · Lesson 2
A pH scale is logarithmic, so a small number is a large change.
Chemistry · Chapter 2 · Lesson 5
Two forces, and every trend follows.
Chemistry · Chapter 3 · Lesson 1
Transfer, then attraction.
Chemistry · Chapter 3 · Lesson 3
The pairs you cannot see decide it.
Chemistry · Chapter 4 · Lesson 2
Five patterns that cover most of what happens.
Chemistry · Chapter 4 · Lesson 3
Charges first, then the formula.
Chemistry · Chapter 4 · Lesson 4
Most of an equation did nothing.
Chemistry · Chapter 4 · Lesson 5
Follow the electrons.
Chemistry · Chapter 8 · Lesson 1
Strong is not the same as concentrated.
Chemistry · Chapter 8 · Lesson 3
Finding a concentration by measuring a volume.
Honors Chemistry · Chapter 2 · Lesson 5
Trends are effective nuclear charge and distance, in competition.
Honors Chemistry · Chapter 3 · Lesson 1
The molecule is not flickering between structures.
Honors Chemistry · Chapter 3 · Lesson 2
Four identical bonds from three p orbitals and one s.
Honors Chemistry · Chapter 3 · Lesson 3
The model that gets oxygen right.
Honors Chemistry · Chapter 8 · Lesson 1
Track the electrons and the rest follows.
Honors Chemistry · Chapter 8 · Lesson 2
Separate the two halves and the electrons have to travel.
Honors Chemistry · Chapter 8 · Lesson 4
Pay the voltage and the reaction runs backwards.