Chemical Reactions

Fill in the Blank

Determine the type of chemical reaction:

Multiple Choice

Some students are using samples of different substances for a lab investigation. They plan to observe the physical properties of each substance and record their observations in a table like the one below.

Which of the substances observed are elements?

• S, Fe, O₂, Sr and Al

• S, O₂ and LiF

• N₂O₄, O₂, and LiF

• N₂, O₄, Fe, Sr and Al

Open Ended

Explain with compete sentences, what are the steps you need to take to find the answer to the question below...

How many atoms of Aluminum are in this formula?

Open Ended

Two students combine unknown substances during a chemical reactions investigation. How will the product MOST LIKELY present itself?

Draw

Draw an "X" where the reactants are and an "O" where the products are

Multiple Choice

AB → A + B

In the reaction above, reactant AB has a mass of 12 grams and product B has a mass of 5 grams. How many grams should product A have?

• 17g

• 2g

• 7g

• 5 grams

Open Ended

Explain what is happening in the following image.

Fill in the Blank

What type of reaction is the following:
$$CaCO_3\ \ \longrightarrow\ \ CaO\ +\ CO_2$$  

Poll

How confident do you feel about this topic now?

• Very confident
• Somewhat confident
• Not confident