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Safety
Mixtures
Density
Volume
Choosing a Cleaner
100
True or false. It is okay to carefully smell a substance to identify it.
False.
100
True or false. Iron and sand can be separated using a filter.
False
100
Ethanol is less dense than water. Corn syrup is more dense than water. If ethanol, corn syrup and water were mixed together, what liquid would float on top?
Ethanol
100
Define volume.
The amount of space something takes up.
100
Define trade-off.
When you give up something in one area to gain something else in another.
200
The product label and material data safety sheet state that a common medical product may cause stomach irritation, respiratory tract irritation, skin irritation, and eye irritation. What safety precautions should you use?
Wear goggles and gloves; do not ingest. Wash your hands.
200
What would be the best method to separate a mixture of Iron and salt?
Use a magnet.
200
Cindy measures a piece of metal and determines it has a mass of 20 grams and a volume of 4 mL. What is the density of the piece of metal?
5 g/mL
200
Name two methods for measuring volume.
Measure and calculate; water displacement.
200
Look at the material data safety sheet for Product B. What does the product look like?
Transparent colorless liquid.
300
Look at the product label for cleaner C. What safety precautions should I consider?
Do not ingest; keep away from flame.
300
If a piece of metal has a density of less than 1.00 g/mL, what will it do in water?
Float
300
True/false. The equation for volume is D=M/V.
False.
300
Aaron chooses a cleaner that is less effective but is safer for the environment. This is an example of a...
trade-off
400
What safety precaution should I take if something is flammable?
Store it in a cool, dry place and keep away from all flames.
400
Look at the table. Are there any characteristics that would NOT help you identify the substances?
No.
400
The density of carbon is 2.25 g/cm3. The density for nickel is 8.90 g/cm3. The density for zinc is 7.13 g/cm3. Which of the three metals is the most dense?
Nickel.
400
Look at the product label for cleaner A. Sam pours 100 mL of cleaner A into a container with 10 mL of water. Which one would float on top?
Cleaner A; because it is less dense.
400
A cleaner states that it is highly toxic. What might I want to consider before putting it down my drain?
Your drain goes to the water supply. It could contaminate it.
500
Look at the product label for cleaner A. What is a suitable way to dispose of this chemical?
Pour it down the drain with plenty of water.
500
Look at the table. Which liquid is miscible in water but not in ethanol?
Citric acid solution.
500
A wooden cube measuring 3 cm by 3 cm by 3 cm has a mass of 13.5 grams. What will it do in water?
Float
500
What would happen to the density of a cube if my volume is cut in half?
Density will stay the same.
500
A cleaner states that it may damage pipes. Name the hazard class it will fall under.
Corrosive