Question

unit 1 test review 1 • vocabulary, lab techniques, & safety name 14a (to do it) define the terms below: accuracy precision independent variable dependent variable control hypothesis theory law lab techniques and safety: review the images and answer the questions. image questions a. what would you do to make sure the stock solution created in the image did not get contaminated in the lab? b. what should you do if glass gets broken in the lab? c. how should you protect your eyes? d. if a chemical gets in your eyes, what will you have to do? 2 • matter and changes in matter directions: use the flow chart, images, and your notes to answer the questions. separating mixtures - sedimentation a. what type of mixture is shown in the image? b. what technique could you use to separate the mud and the water? c. are the techniques for separating mixtures using physical or chemical changes? how do you know? d. what physical separation technique should be used to separate dyes?

Explanation:

This is a set of questions related to a science (likely chemistry or general science) unit test review, covering vocabulary, lab techniques/safety, and matter/mixtures. Since you haven't specified which specific question you want help with, here's how you could approach one of them, for example, question 2a (What type of mixture is shown in the image? The image shows muddy water separating into water and mud):

The mixture shown (muddy water) has visible different components (mud and water) that can be separated by sedimentation (as shown in the image where mud settles at the bottom). A heterogeneous mixture is one where the components are not uniformly distributed and are visually distinguishable. So this is a heterogeneous mixture.

Answer:

The mixture shown in the image is a heterogeneous mixture.