ShmoopTube
Where Monty Python meets your 10th grade teacher.
Search Thousands of Shmoop Videos
Science Videos 686 videos
In this video, we dive beneath the sea to review the kinds of interesting animals that live in the deep blue.
Anything that has a cell (bacteria, listen up!) has phospholipids that keep the cell contained and give it form and shape. Phospholipids protect us...
ACT Science 2.1 Research Summary Passage 606 Views
Share It!
Description:
ACT Science: Research Summary Passage Drill 2, Problem 1. Why do you think that the filter paper will not remove the salt from the water?
Transcript
- 00:03
Here's your shmoop du jour:
- 00:06
Here's a passage for you to hit pause and review.
- 00:08
Sorry we didn't have time to wrap it.
- 00:18
Why do you think that the filter paper will not remove the salt from the water?
- 00:23
Here are the potential answers...
Full Transcript
- 00:28
What's this question asking?
- 00:29
Well, there are three key components... filter paper, salt, and water.
- 00:35
The thing about the ACT tests is that the answer to every question is hidden somewhere inside.
- 00:40
You don't have to commit any massive textbooks to memory
- 00:43
before sitting down with your number 2... pencil.
- 00:46
Okay... so it's NOT so hidden in this case.
- 00:49
Take a look at the third sentence of the passage:
- 00:52
This step will remove any components of a mixture
- 00:55
that are not dissolved in the aqueous mixture...
- 00:59
'This step' refers to passing a mixture through a filter.
- 01:02
What is this question asking again?
- 01:04
Could it be asking...why the filter paper will not remove salt from water?
- 01:09
Maybe it's because 'the salt, but not the sand, was dissolved in the water'.
- 01:14
Yeah, straight from the information they gave us.
- 01:16
And combining the information from the two sentences...
- 01:19
...we get that the salt is dissolved in the water...and that the step will remove any
- 01:23
components of a mixture that are NOT dissolved.
- 01:26
Since salt is dissolved, it cannot be removed. Looks like option B's our answer.
- 01:31
And, if we want to be absolutely positive that we've got the right one... we can prove
- 01:35
that the other options are all incorrect:
- 01:38
We're using filter paper here, not a blowtorch, so the water won't be boiling away.
- 01:42
C is definitely out.
- 01:44
Distillation comes after the paper filter.
- 01:47
Time travel has yet to be invented, so we can toss out (A).
- 01:50
Now for (D). If the salt crystals were too large to fit on the paper, they'd separate
- 01:55
out of the water too, along with the sand.
- 01:57
But no, sand and salt are different, so we still need to distill the water.
- 02:01
D isn't right either.
- 02:02
Yep, definitely B.
- 02:04
Well done. This problem was no day at the beach.
Related Videos
ACT Science: Conflicting Viewpoint Passage Drill 1, Problem 1. What statement would both scientists agree upon?
ACT Science Data Representation Passage: Drill 3, Problem 5. According to Figure 2, what birth date will be predicted for an individual actual...
ACT Science: Data Representation Passage Drill 1, Problem 2. Which of the following is a variable in Figure 1, but not in Figure 2?
ACT Science: Data Representation Passage Drill 1, Problem 1. What do the statistics in Figure 1 suggest?
ACT Science: Data Representation Passage Drill 1, Problem 3. What is the strong correlation between weight and a player's salary?