Issues In Physical Science Unit A and B

Your teacher holds up a solid informs you that this non magnetic is less dense than zinc. Based on this information the solid is:

Aluminum

Which of the following is not a property of a material?

Color, shape and size

Which of the following is an example of a mixture that can be separated using a filter

Cracks, pieces of metal and wood

What is true about handling toxic waste?

Dilution lowers the concentration of the toxic materials in liquid wastes.

What can an element contain?

Gas, liquid, or metal

What are the noble gases?

Helium, Neon, Argon, Krypton, Xenon, Radon

The life cycle of a product refers to

How it was made, how it was used, and the end of life

If you place a solid in water, you can determine if a ball will float or sink.

If it floats or sink.

The label on a container of a drain cleaner says: Harmful or fatal is swallowed. Causes severe irritation to eyes, skin, mouth, and clothing. "Which type of hazard does the drain cleaner pose?

It is Toxic

Why is ammonia used to test for copper in a solution?

It is because it's the control for each test

A wooden cube has a mass of 9 mass grams. Will it float or sink in water?

It will sink because the mass of the cube is larger in water.

Jane measures a piece of metal and determines it has a mass of 10 grams and 2 mL. What is the density of the piece of metal?

It's density is 5 (hint, 10 divided by 2 equals 5)

Mineral oil is less dense than water. Mercury, a liquid metal, is more dense than water. If mineral oil, mercury, and water were mixed together, which liquid would float to the top?

Mineral oil

Plastics are made from

Oil and gas from the ground

What are Plastics are made from?

Oil and gas from the ground.

A consumer wants to do his or her part to reduce the production of waste. How can they do this?

Recycle plastics, pick up trash and don't litter.

Which of the following is a chemical property of a substance?

Smell, heat, bubbling, reactivity, toxicity, flammable, and corrosive.

Most elements are what at food temperature?

Solid

The contents of a large , unlabeled can are tested. The contents of the can do not dissolve in water and have a pH of 7. When placed in an acid, the contents of the can bubble and the odor of rotten eggs is produced. Based on the information, what conclusion can be made?

The contents are all acids.

You have been asked to separate the contents of a barrel that contains motor oil, water, gravel, small pieces of metal, and pieces of cork. What materials would you use and what are the steps of the procedure?

The materials you would need are a coffee filter, forceps, gloves, a bucket, and cup. You would pour all the contents into a bucket, then place the coffee filter over a cup then pour the contents into the bucket and let the larger pieces get stuck on the coffee filter and let the liquids and sand go into the cup.

A student pours two different solutions into a glass beaker. What would indicate chemical reaction took place between the two solutions?

The solution starts bubbling, getting warm, and changed colors.

While working on an activity to investigate chemical reactions, a student mixes two clear liquids in a beaker. When the two liquids mix, the result is a clear liquid and an orange solid precipitate. What best describes the reactant that the student worked with?

The two clear liquids

Your friend wants to buy a new MP3 Player and asks your advice. One model is quite expensive but it is made from the recycled plastics. The other model your friend is considering is less expensive, comes in a wider variety of colors but cannot be upgraded and is made from all new materials. What model should your friend buy?

They should buy the first because as you use it more it can be upgraded and is made from all new materials. It is more expensive but will pay off in the long run.

What's an example of a compound?

Two chemicals combined such as H20 and CO2

What safety rules should you always follow while doing a science laboratory?

Wear goggles, gloves, protective coat, and always handle with care and caution.

Which of the following is a list of physical properties?

density, volume, mass, boiling point, hardness, and effect on glass

When choosing a material to make a product, such as soft drink container, the most important factor is............

the environmental impact