Drop and Swap

What is the 'Drop and Swap' method used for in chemistry?

• Balancing chemical equations

• Determining molecular geometry

• Writing ionic formulas

• Predicting reaction rates

In the 'Drop and Swap' method, which of the following is the correct ionic formula for combining calcium (Ca) and chlorine (Cl)?

Tags

NGSS.MS-PS1-1

Which of the following best describes the 'Drop and Swap' method?

• A technique to balance redox reactions

• A method to determine the empirical formula

• A way to write ionic compounds by swapping charges

• A process to identify limiting reactants

Using the 'Drop and Swap' method, what is the formula for aluminum oxide?

Tags

NGSS.MS-PS1-1

The 'Drop and Swap' method is primarily used in which branch of science?

• Physics

• Biology

• Chemistry

• Geology

When using the 'Drop and Swap' method, what do you do with the charges of ions?

• Add them together

• Ignore them

• Swap and drop them as subscripts

• Multiply them

Which of the following compounds is correctly written using the 'Drop and Swap' method for magnesium (Mg) and nitrogen (N)?

Tags

NGSS.MS-PS1-1

What is the first step in the 'Drop and Swap' method?

• Identify the charges of the ions

• Balance the equation

• Determine the molar mass

• Predict the product

Using the 'Drop and Swap' method, what is the correct formula for sodium sulfide?

Tags

NGSS.MS-PS1-1

Which of the following is a limitation of the 'Drop and Swap' method?

• It cannot be used for covalent compounds

• It requires balancing equations

• It only works for gases

• It is only applicable to organic compounds