Exploring Pure Substances and Mixtures in the Lab

Mr. Roble presents a video lab for Roosevelt students on pure substances and mixtures. The lab involves using nuts, bolts, and washers to explore the differences between pure substances and mixtures, as well as elements and compounds. Students are guided through several parts, including separating, mixing, and bonding the items, with specific questions to answer for each part. The video also addresses a typo in the instructions and provides hints for answering conclusion questions using notes.

What is the main purpose of the 'Pure Substances and Mixtures Lab'?

• To explain the difference between pure substances and mixtures using physical properties

• To learn about chemical reactions

• To study the properties of gases

• To identify different types of metals

In Part A, what are you supposed to do with the nuts, bolts, and washers?

• Throw them away

• Separate them into three piles of the same item

• Connect them into sets

• Mix them all together

After separating the items in Part A, how many piles should you have?

• Four

• Three

• One

• Two

In Part B, what should you do with the nuts, bolts, and washers?

• Throw them away

• Combine them into one pile without connecting them

• Connect them into sets

• Separate them into three piles

What is the main task in Part C?

• Throw away the washers

• Connect one bolt, one washer, and one nut into sets

• Combine all items into one pile

• Separate the items into piles

What should you do with the typo in Part C?

• Skip the entire part

• Ignore it

• Correct it and proceed to the next question

• Ask the teacher for help

In Part D, what should you do with the washers?

• Connect them with bolts and nuts

• Throw them away

• Mix them with other items

• Leave them separated

What should you do with the nuts and bolts in Part D?

• Mix them with washers

• Throw them away

• Connect them into sets

• Leave them separated

What is the hint given for the conclusion questions?

• Ask a friend

• Use your notes to help you

• Guess the answers

• Skip the questions

What is the main challenge mentioned for the conclusion questions?

• Writing the answers neatly

• Understanding the lab instructions

• Connecting the items correctly

• Finding the means to separate mixtures