Wednesday Warm Up

1. Wednesday Warm Up October 2

2. The instructions for a scientific investigation ask you to observe the texture of a sample. What should you do? A weigh the sample B feel the sample C find the volume of the sample D smell the sample

3. A student is given a mixture of iron filings and pepper. Which of the following physical properties would be most helpful for separating the iron filings from the pepper? A color B smell C magnetism D dissolving

4. A student dissolved salt into some water. Then the student poured the saltwater solution into an aluminum pan and placed it in the sun for a week. Predict what happened to the salt water in the pan. • Nothing happened because the salt and water formed a solution. • The salt and water evaporated and condensed in another place. • The water evaporated and left the salt in the pan. • The salt evaporated and left the water in the pan.

5. People once looked for gold in riverbeds. They would sift wet sand from the river bottom and hope to find shiny bits of gold in their sieves. Which clue suggests that the sand and the gold were a mixture? • The gold separated easily from the sand. • The sand and the gold were difficult to separate. • The sand dissolved in the water. • The gold sank to the bottom of the river.