Question

do you ever wonder how batteries create enough power to light a flashlight? you can use chemistry to find out! chemistry is a kind of science that studies what everything is made of and how it works. in this experiment, youll use coins, vinegar, and salt to create a battery. this battery will be able to make electricity, a kind of energy that is carried through wires and is used to make machines and light bulbs work. if you follow the steps correctly, the battery should light a tiny light bulb.

what you need

to start, gather your supplies:

• a cardboard cereal box
• 7 nickels
• 7 pennies
• white vinegar
• salt
• plastic mixing bowls
• a glass measuring cup
• a 1 - teaspoon measuring spoon
• an led light bulb with long wires
• aluminum foil

right side: fill in the blanks to describe the steps for building the first cell of the battery.
the first step is to put a penny down. next, you place a nickel square. to finish the first square, a nickel on top of penny square.

Explanation:

To solve the fill - in - the - blanks for the battery - building steps, we analyze the context:

Step 1: First blank (put a _ down)

The experiment is about building a battery with pennies and nickels. The first step of building the battery cell is to put a penny down. This is because the battery construction uses alternating layers of pennies and other components (like the nickel - related square and then another nickel or penny). So the first blank should be filled with "penny".

Step 2: Second blank (place a _ square)

We use a square (probably a soaked square, maybe in the vinegar - salt solution) and the appropriate metal for the layer. After the penny, we place a nickel square. So the second blank is "nickel".

Step 3: Third blank (finish the first _ on top of... square)

To finish the first cell, we put a nickel on top of the previous square (the nickel square). Wait, no, let's re - examine. Wait, the first step: put a penny down. Then place a nickel square. Then to finish the first cell, we put a nickel on top? Wait, no, maybe the correct sequence is: put a penny down, place a nickel square, then put a nickel on top? Wait, no, looking at the options (from the dropdowns and the text), the correct sequence for the first cell: put a penny down, place a nickel square, then put a nickel on top? Wait, no, the third blank: the dropdown has "nickel" and the other option was maybe "penny", but based on the battery construction (using pennies and nickels as electrodes, with the soaked square as the electrolyte - soaked separator), the first cell is penny (electrode) - soaked square (electrolyte) - nickel (electrode). Wait, maybe the steps are:

1. Put a penny down (first electrode).
2. Place a nickel square (the electrolyte - soaked square, maybe cut from the cereal box and soaked in vinegar - salt solution) on the penny.
3. To finish the first cell, put a nickel on top of the nickel square? No, that doesn't make sense. Wait, maybe the correct steps are:

First step: put a penny down.

Next: place a nickel square (the soaked square) on the penny.

To finish the first cell: put a nickel on top of the nickel square? No, perhaps the correct answer for the third blank is "nickel". Wait, the dropdown for the third blank is "nickel" and the other option was maybe "penny", but based on the battery - making process (a voltaic cell with two different metals and an electrolyte), the first cell would have a penny (copper) and a nickel (nickel) as the two electrodes with the electrolyte - soaked square in between. So the steps are:

• Put a penny down (copper electrode).
• Place a nickel square (electrolyte - soaked, acting as the electrolyte medium) on the penny.
• To finish the first cell, put a nickel (nickel electrode) on top of the nickel square.

So the filled - in blanks are:

The first step is to put a $\boldsymbol{\text{penny}}$ down. Next, you place a $\boldsymbol{\text{nickel}}$ square. To finish the first cell, put a $\boldsymbol{\text{nickel}}$ on top of the nickel square.

Answer:

To solve the fill - in - the - blanks for the battery - building steps, we analyze the context:

Step 1: First blank (put a _ down)

The experiment is about building a battery with pennies and nickels. The first step of building the battery cell is to put a penny down. This is because the battery construction uses alternating layers of pennies and other components (like the nickel - related square and then another nickel or penny). So the first blank should be filled with "penny".

Step 2: Second blank (place a _ square)

We use a square (probably a soaked square, maybe in the vinegar - salt solution) and the appropriate metal for the layer. After the penny, we place a nickel square. So the second blank is "nickel".

Step 3: Third blank (finish the first _ on top of... square)

To finish the first cell, we put a nickel on top of the previous square (the nickel square). Wait, no, let's re - examine. Wait, the first step: put a penny down. Then place a nickel square. Then to finish the first cell, we put a nickel on top? Wait, no, maybe the correct sequence is: put a penny down, place a nickel square, then put a nickel on top? Wait, no, looking at the options (from the dropdowns and the text), the correct sequence for the first cell: put a penny down, place a nickel square, then put a nickel on top? Wait, no, the third blank: the dropdown has "nickel" and the other option was maybe "penny", but based on the battery construction (using pennies and nickels as electrodes, with the soaked square as the electrolyte - soaked separator), the first cell is penny (electrode) - soaked square (electrolyte) - nickel (electrode). Wait, maybe the steps are:

1. Put a penny down (first electrode).
2. Place a nickel square (the electrolyte - soaked square, maybe cut from the cereal box and soaked in vinegar - salt solution) on the penny.
3. To finish the first cell, put a nickel on top of the nickel square? No, that doesn't make sense. Wait, maybe the correct steps are:

First step: put a penny down.

Next: place a nickel square (the soaked square) on the penny.

To finish the first cell: put a nickel on top of the nickel square? No, perhaps the correct answer for the third blank is "nickel". Wait, the dropdown for the third blank is "nickel" and the other option was maybe "penny", but based on the battery - making process (a voltaic cell with two different metals and an electrolyte), the first cell would have a penny (copper) and a nickel (nickel) as the two electrodes with the electrolyte - soaked square in between. So the steps are:

• Put a penny down (copper electrode).
• Place a nickel square (electrolyte - soaked, acting as the electrolyte medium) on the penny.
• To finish the first cell, put a nickel (nickel electrode) on top of the nickel square.

So the filled - in blanks are:

The first step is to put a $\boldsymbol{\text{penny}}$ down. Next, you place a $\boldsymbol{\text{nickel}}$ square. To finish the first cell, put a $\boldsymbol{\text{nickel}}$ on top of the nickel square.