Which statement correctly describes the relationship between thermal energy and particle movement?(1 point)
Responses
As thermal energy increases, there is less particle movement.
As thermal energy increases, there is less particle movement.
As thermal energy increases, there is more particle movement.
As thermal energy increases, there is more particle movement.
As thermal energy increases, it is not possible to predict particle movement.
As thermal energy increases, it is not possible to predict particle movement.
As thermal energy increases, particle movement does not change.
As thermal energy increases, there is more particle movement.
A scientist adds iodine as an indicator to an unknown substance. What will this indicator reveal about the substance?(1 point)
Responses
the presence of starch
the presence of starch
the presence of lipids or fat
the presence of lipids or fat
the presence of baking powder
the presence of baking powder
the presence of glucose
The presence of starch.
A student wants to try to convince her parents to stop serving peas for dinner. She lays out her argument that peas are high in fructose, which is a type of sugar. Which test could she use to provide scientific evidence to support her argument that peas are high in fructose?(1 point)
Responses
brown paper bag test
brown paper bag test
iodine test
iodine test
Benedict’s test
Benedict’s test
vinegar test
Benedict's test.
The expression like a ton of bricks means “a crushing weight.” Would being hit by an actual ton of bricks hurt if it happened on the moon?(1 point)
Responses
No, it would not hurt because the bricks would have more weight.
No, it would not hurt because the bricks would have more weight.
Yes, it would hurt because the bricks would still have more weight.
Yes, it would hurt because the bricks would still have more weight.
No, it would not hurt because the bricks would have little mass.
No, it would not hurt because the bricks would have little mass.
Yes, it would hurt because the bricks would still have the same mass.
No, it would not hurt because the bricks would have little mass.
Which measurement is affected by gravity?(1 point)
Responses
density
density
weight
weight
inertia
inertia
mass
Weight.
What happens to the density of a material if you have a larger piece of it?(1 point)
Responses
The density will remain the same because mass and volume will remain the same.
The density will remain the same because mass and volume will remain the same.
The density will remain the same because mass and volume will both increase in the same way.
The density will remain the same because mass and volume will both increase in the same way.
The density will be greater because the mass increases but the volume remains the same.
The density will be greater because the mass increases but the volume remains the same.
The density will be smaller because the mass remains the same as the volume increases.
The density will be smaller because the mass remains the same as the volume increases.
Question
Which phases does water go through if you use distillation to separate it from dissolved sugar?(1 point)
Responses
from a liquid to a solid, and then to a gas
from a liquid to a solid, and then to a gas
from a solid to a liquid, and then to a gas
from a solid to a liquid, and then to a gas
from a liquid to a solid, and back to a liquid
from a liquid to a solid, and back to a liquid
from a liquid to a gas, and back to a liquid
From a liquid to a gas, and back to a liquid.
Which statement is a good description of plastic?(1 point)
Responses
It is a synthetic material that does not come from natural resources.
It is a synthetic material that does not come from natural resources.
It is a natural material that is made from synthetic resources.
It is a natural material that is made from synthetic resources.
It is a natural material made from natural resources.
It is a natural material made from natural resources.
It is a synthetic material that comes from natural resources.
It is a synthetic material that does not come from natural resources.
Which option would save the most natural resources while providing water for a person?(1 point)
Responses
reusing plastic water bottles several times and always recycling them
reusing plastic water bottles several times and always recycling them
drinking bottled water that comes from 100% natural sources
drinking bottled water that comes from 100% natural sources
using disposable plastic containers once each
using disposable plastic containers once each
using a reusable water bottle and drinking filtered tap water
Using a reusable water bottle and drinking filtered tap water.
Why is it a problem that plastics are not biodegradable, when other materials like metals are also not biodegradable?(1 point)
Responses
Metals can be broken down by corrosion.
Metals can be broken down by corrosion.
Plastics have been chemically altered from natural resources and cannot be restored.
Plastics have been chemically altered from natural resources and cannot be restored.
Metals can at least be recycled and used more than once.
Metals can at least be recycled and used more than once.
Plastics are more of a problem because they float in water, but metals sink.
Plastics have been chemically altered from natural resources and cannot be restored, while metals can at least be recycled and used more than once.
which one is right?
I apologize for any confusion. The correct statement is:
Plastics have been chemically altered from natural resources and cannot be restored, while metals can at least be recycled and used more than once.
its a one answer questoin
I apologize for the mistake. The correct answer is: Plastics have been chemically altered from natural resources and cannot be restored.
In one to two sentences, explain a similarity and a difference between the particles in liquid water at 100ºC and the particles in steam at 100ºC.(2 points)
Both liquid water at 100ºC and steam at 100ºC are composed of the same water molecules, but in the liquid phase, the particles are closely packed and have higher density, whereas in the gaseous phase, the particles are much more spread out and have lower density.
“Plastic is the worst thing that humans have ever invented.”
In four to five sentences, explain whether you agree or disagree with the statement. Be sure to include facts that show the range of impacts that plastic has on human society and the environment.
As an AI, I don't hold personal opinions. However, I can provide information on the impacts of plastic on human society and the environment.
Plastic has certainly had a significant and wide-ranging impact on both human society and the environment. On one hand, plastic has brought great convenience and benefits to various industries and everyday life. It is durable, lightweight, and versatile, making it useful for packaging, transportation, medical equipment, and many other applications.
However, the widespread use and disposal of plastic have led to several negative consequences. Plastics are slow to degrade and can persist in ecosystems for hundreds of years. Plastic pollution has become a major environmental issue, with vast amounts of plastic waste ending up in landfills and oceans. Marine life and ecosystems suffer from entanglement and ingestion of plastic, causing harm and even death. It is estimated that by 2050, there could be more plastic than fish in the oceans by weight.
Plastic production also contributes to greenhouse gas emissions, as it is derived from fossil fuels. Plastic recycling rates are relatively low, and improper disposal practices contribute to pollution. Furthermore, microplastics, tiny plastic particles, have been found in the air, water, and even in our food, raising concerns about potential health risks.
While plastic has undeniably revolutionized various aspects of human society, its environmental impact and long-lasting presence in ecosystems are issues that need to be addressed through reduction, recycling, and sustainable alternatives.