Question

1. now match the separation technique with the picture: chromatography filtration distillation a. b. c. 8. fill in the blanks by writing numbers in either regular notation or scientific notation. regular notation scientific notation 15600 1.56 x 10^4 250,000 0.00045 2.3 x 10^3 6.1 x10^-3 9. if you get a chemical on your skin or in your eyes, the first thing you should do is always 10. if you need to mix acid and water together, remember that the safety rules state that you should always add __________ to ________ 11. if you see a graph that shows a relationship between two variables, it will often fall into one of two categories: direct relationship or inverse relationship. a direct relationship can be summarized by saying that as one variable increases, the other variable ________. an example of this would be ________ an inverse relationship can be summarized by saying that as one variable increases, the other variable ________. an example of this would be __________ sketch the general shape of each graph below: y x direct relationship y x inverse relationship 2

Explanation:

7.

• A is distillation (has a heating - cooling setup for separating liquids based on boiling points).
• B is chromatography (uses a stationary phase like paper to separate components of a mixture).
• C is filtration (uses a filter to separate a solid - liquid mixture).

8.

Regular Notation	Scientific Notation
250000	$2.5\times 10^{5}$
0.00045	$4.5\times 10^{-4}$
2300	$2.3\times 10^{3}$
0.0061	$6.1\times 10^{-3}$

9.

Step1: Flush with large amounts of water

To dilute and remove the chemical.

Step1: Add acid to water

To prevent splashing due to the exothermic nature of the reaction.

Step1: Increases

As one variable increases, the other increases.

Step2: Example

The relationship between distance and time when speed is constant (distance = speed×time).

Answer:

Flush the affected area with large amounts of water immediately.

10.