Bath Bomb making day!

Multiple Choice

The first three periods of the periodic table are shown.

Why can more than one element have the same number of valence electrons?

• Atoms are formed from other atoms that have the same number of valence electrons.

• Atoms from elements in the same group have similar arrangements of valence electrons.

• Atoms with the same number of protons have the same number of valence electrons.

• Atoms from elements in the same period can change neutrons into valence electrons.

Multiple Choice

A student performs an experiment that uses baking soda, vinegar, and water. Which part of the student’s experiment causes a mixture to form?

• The student pours water into a cup and vinegar into a second cup.

• The student stirs baking soda into the cup with water until it completely dissolves.

• The student pours some of the vinegar into the cup with the baking soda and water.

• The student observes bubbles form and flow over the top of the cup onto the table.

Open Ended

So yesterday we learned about subscripts. Explain in your own words what a subscript is or does.

Dropdown

C₆H₁₂O₆ means there are ​

Select answer

Carbon (C), ​

Select answer

Hydrogen (H), and ​

Select answer

Oxygen (O).

Dropdown

CaCl2, means there are ​

Select answer

atoms of calcium (Ca), and ​

Select answer

atoms of chlorine (Cl).

Your product is what is produced in the end. In this case, we are making bath bombs.

Product

Your reactant is what goes into the chemical reaction. In this case, your bath bomb is made of baking soda, citric acid, and coconut oil.

Reactant

Bath Bombs

How to break it down:

The steps you need to follow:

1. Write down each element on the reactant side and on the product side, beneath it.

2. Count the atoms on the reactant side for each element and fill it in.

3. Count the atoms on the product side for each element and fill it in.

4. Is it balanced, or unbalanced?

Draw

Write down how many Sodium (Na) atoms, Hydrogen (H) atoms, Carbon (C) atoms, and Oxygen (O) atoms there are for your reactant side and your product side.

Determine if it is balanced or unbalanced.

Poll

How are you feeling about subscripts so far?

• I've got it!

• I almost have it!

• I need more help!

• I am completely lost!

Bath Bomb Time!

Ingredients:

·   1 cup citric acid

·   1 ½ cups baking soda

·   ½ cup almond oil or coconut oil

·   8-10 drops essential oils

·   silicon mold or ice cube tray

Directions:

1.       In a medium bowl, whisk together the citric acid and baking soda. With a spoon or spatula, mix in almond oil and essential oils. Mixture should just hold together when pressed between fingers.

2.       Press mixture into your molds so that it’s firmly packed.
3. Write your name on a popsicle stick (with permanent marker) and place in your bath bomb.
4. Let dry for 24 hours. If bombs don’t yet hold together, let dry longer.