Chemistry Middle School

Landon's new toy arrived in the mail covered in foam packing peanuts. The foam packing peanuts have a mass of 30 g and a volume of 60 cm3. What is the density?

2 g/cm3
180 g/cm3
0.5 g/cm3
2

Answers

Answer 1
Here’s your answer 0.5 g/cm3
Answer 2
2 g / cm3 18g/cm3 one is 0.5G/ cm3 and the other 2 g / cm 4

Related Questions

How is the sun related to nuclear, radiant, and heat energy?

Answers

Answer:The sun creates energy through nuclear fusion. Kinetic energy creates heat and light.

Explanation:

the sun is related to those by beating really hot

The chemical formula for sulfuric acid is H2SO4. In one molecule of sulfuric acid, there are _____.

two atoms of helium
two atoms of oxygen
four atoms of oxygen
four atoms of sulfur oxide

Please help for my summer school, you can take your time (:

Answers

Answer:

four atoms of oxygen

Explanation:

two atoms of hydrogen

one sulphur atom

Four atoms of oxygen

Why do scientists use models, and why do all models have limitations???
Plsss help! :) I will give brainliest!! :)

Answers

Answer:

Scientists use  models to represent data/evidence. However, all models have limitations. However, models are simplified versions of reality, and can't be totally accurate in representation.

Hope this helps :)

Answer:

Since models are simpler than real objects or systems, they have limitations. ... It may not predict the behavior of the real system very accurately. But the more computing power that goes into the model and the care with which the scientists construct the model can increase the chances that a model will be accurate.

How is radiant energy from the microwave transformed into heat energy?

Answers

The waves emitted from the microwave sends the molecules within the object into a faster motion. The heat is generated from the faster movement of the molecules in the object. ... It is only transformed into new substances or energies.

Radiant energy comes from gravitational and electromagnetic radiations. This energy from the microwave is transformed into heat energy by the faster-moving molecules.

What is energy conversion?

Energy conversion is the process of transformation of the energy from one form to another that also follows the law of conservation of mass or matter. Radiant energy is the heat or energy that is given out by electromagnetic waves in the form of various waves.

This radiant energy has its own characteristics that differentiate it from other waves. The waves from radiant energy have a molecular speed that gets increased by the temperature and this increases collision and kinetic energy producing new substances and generating heat.

Therefore, the movement of particles in microwave transforms the radiant energy into heat energy.

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If there is not one scientific method, then what do all scientists have in common???
Plsss I will give brainliest, and 12 points !!

Answers

Answer:

One thing that all scientists have in common is that they find problems in the world, and attempt to seek answers to those problems. Everything that scientists do begins with observations, leading to questions.

Let me know if this helps!

While no single scientific method is uniformly followed by all scientists, there are certain common aspects and concepts that scientists share in their search of knowledge and understanding.

These are some examples:

Scientists rely on empirical evidence gathered via observation, experimentation, and measurement.

Systematic and Objective Investigation: Scientists explore and analyse events using systematic and objective approaches.

Scientific discoveries should be repeatable, which means that other researchers should be able to replicate the tests and achieve identical results.

Thus, although scientists' methodologies and approaches differ between fields, these basic principles drive their research and contribute to the collective growth of scientific knowledge.

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How is science different from other ways of learning about the world??? PLSS HELPP ASAPPP! :)

Answers

Answer:

Science does not change across region.

Explanation:

Regardless of language barriers or methods of learning, science is the study of fundamental concepts that explain how our world and the universe works.

It’s stating the actual facts based off nature planet world chemicals not based off “historic myths” or numbers

What is the difference between data and evidence???
Helpppp! I will give brainliest! PLSSS!

Answers

Data is just data and has no intrinsic meaning on its own. Evidence has to be evidence for or of something; an argument, an opinion, a viewpoint or a hypothesis. The evidence you use depends on your argument.
Data is calculated and evidence is pre existing

PLZ HELP I WILL GIVE BRAINLY AND POINTS
Put the steps of the scientific method into the correct order.

Devise an experiment to prove or disprove.
State conclusions.
Conduct a literature search.
Define the problem.
Propose a hypothesis.

Answers

Answer:

1. Define the problem

2. Conduct a literature search

3. Propose a hypothesis

4. Devise an experiment to prove or disprove

5. State conclusions

Explanation: In order to begin an experiment, you must first define a problem or question that you will be answering. Then you must research the problem in order to form a hypothesis, or an educated guess. Then you should devise and execute an experiment to answer your question. The conclusions that you draw will either prove or disprove your hypothesis. Hope this helps!

1. Define problem
2. Hypothesis
3. Search
4. Experiment
5. Conclusion

What makes a good scientific question???
Plsss help! I will give brainliest! :)

Answers

Answer:

A good question is testable,  detailed, measured, and controlled.

Just let me know if you have any other questions.

Details, control and measurements.

Choose all the answers that apply.

Nitrogen has an atomic number of 7. Its atomic mass is 14. Nitrogen has _____.

seven electrons
seven neutrons
seven electron shells
23 neutrons
14 electrons

Please help (:

Answers

Seven electrons. The atomic number of a element is also the amount of protons and electrons it has.
As atomic Number is number of protons Or number of electrons so
N has 7 electrons
Neutrons= Mass no.- Atomic Number
= 14-7
N has 7 neutrons
N doesn’t have 7 electron shells because shell 1 can hold 2 electrons and shell 2 can hold 8 electrons
It doesn’t have 23 neutrons and 14 electrons

So, Seven Electrons and seven neutrons is correct

Describe how the Rube Goldberg device design that you created follows the law of conservation of energy. Be sure to include both parts of the law of conservation of energy in your description.

Answers

Rube Goldberg machines follows law of conservation of energy. In this machine when marble rolls down from top it has kinetic energy.
In this machine, a various instant kinetic energy is transferred into potential energy and vice-versa , so the total energy remain conserved. Thus Rube Goldberg machines follows law of conservation of energy. In this machine when marble rolls down from top it has kinetic energy.

Organisms can either be made of one cell or made of more than one cell

Answers

Answer:

The statement is true.

Explanation:

Organisms can be unicellular (made up of one cell) or multicellular (consisting of more than one cell).

I hope this helps in any way :)

Unicellular organisms are made up of only one cell that carries out all of the functions needed by the organism, while multicellular organisms use many different cells to function. Unicellular organisms include bacteria, protists, and yeast.

Why is it necessary to ensure that unreacted chlorine gas is passed into a fume cupboard when reacting with alumnium?

Answers

The person above is correct.
The person above is correct

Explain the law of conservation of energy.

Answers

Energy is conserved. It never appears or disappears. It just changes from one kind of type to another. The Universe contains the same amount of energy it started with. This amount can never change.

Answer:

Energy cannot be destroyed or created but can be transformed from one form to another

What type of energy is associated with this movement of the molecules?

Answers

Answer:

electric

Explanation:

Thermal energy,
or heat energy
( same thing)

is the energy that comes from the movement of atoms and molecules in a substance. Heat increases when these particles move faster.

Elements in the same group have _____.

the same number of electron shells
the same number of protons
similar chemical properties
the same number of isotopes

Answers

Answer:

Element in the same group have similar chemical properties.

the same number of electron shells

Use complete sentences to explain how the mass of hydrogen is conserved during cellular respiration.

pls make it simple and not write a whole paragraph

Answers

Answer:

Explanation:

The mass of hydrogen is conserved during cellular respiration as it follows the Law of Conservation of Matter.

Answer:

the law of conservation of matter

Explanation:

The mass of hydrogen is conserved during cellular respiration as it follows the Law of Conservation of Matter.

The Law of Conservation of Matter states that the reactants must equal the products, which is demonstrated through the equation that demonstrates cellular respiration.

C6H12O6 + 6O2 -> 6CO2 + 6H20

This shows that hydrogen has been conserved throughout the entire process (H representing Hydrogen) as the product has the same amount of hydrogen as the reactants.

Select all that apply.

Which items are properties of bases?

soapy
sour
bitter
slick
skin damage

Please

Answers

Answer:

soapy and bitter

Explanation:

This answer: Bitter and soapy

Suppose you spill a chemical on yourself:

a. What information can your teacher provide for you concerning that chemical?

b. Where is the information located?

Answers

They can tell you what will stop that chemical from doing damage and it should be located in the front of the class where you can see it
a. how a chemical can affect you. say it can give you a rash. they should tell you how to help it. how to properly get the chemical off without mixing any chemicals that can make it worse.

b. in the front of the class. or the back

Sodium chloride (NaCl) is made from ___ of sodium (Na) and ___ of chlorine (Cl).

Blanks: One Atom and Two Atom

Answers

Answer:

one atom, one atom.

Explanation:

Sodium chloride is made from one sodium atom and one chlorine atom.

Sodium has a charge of +1,  Chlorine has a charge of -1. These cancel each other out leaving only one atom for both sodium and chlorine.

The correct answer is one atom for each space

Quartz, or silicon dioxide (SiO2), is one of the most abundant minerals on Earth. The diagram shows the atomic arrangement of quartz.

Based on the diagram, which statement best describes the atomic arrangement of quartz?
Group of answer choices

An extended structure that is made of repeating patterns of atoms.

A repeating pattern of small molecules that can move freely past each other

Many different kinds of molecules tha combine to form an extended structure.

Many different kinds of atoms that can move freely past each other.

Answers

Based on the atomic arrangement of quartz, it is can be concluded that quartz is an extended structure that is made of repeating patterns of atoms.

What is quartz?

Quartz is a hard crystalline mineral found within the Earth's crust and which is composed mainly of the mineral silica. Silica is mostly silicon(iv) oxide.

Quartz is colourless and its crystalline structure is of a hexagonal prism. The atoms are arranged in a regular repeating grid to form the hexagonal crystal.

Therefore, it is can be concluded that quartz is an extended structure that is made of repeating patterns of atoms.

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Each element has a different:

number of protons and electrons
atomic mass and weight
Properties and characteristics
number of neutrons

Please take your time if needed!

Answers

Properties and characteristics

Answer:

(C.  Properties and characteristics.

Hope this helpos!

Explanation:

Who ever knows about the helium product help me out!

Answers

Answer:

Discovery and Naming: The first evidence of helium was obtained on August 18th, 1868 by French astronomer Jules Janssen. While in Guntur, India, Janssen observed a solar eclipse through a prism, whereupon he noticed a bright yellow spectral line (at 587.49 nanometers) emanating from the chromosphere of the Sun.

The first helium product was found in 18 August ,1868 in france

What determines the amount of chemical energy a substance has? (Try not to make it long)

Answers

Answer: The bonds that hold molecules together contain the chemical energy available in a substance.

Explanation:

The amount of chemical energy is dependent on the kinds of arrangements of atoms.

Please help with questions 11-13! I’ll give brainliest

Answers

Answer:
11- 3
12- 4
13- 2
Answer:
11- 3
12- 4
13- 2 hope this helps

what is the goal of science??

Answers

There are three goals in science:1. Investigate and understand the natural world.2. Explain events in the natural world.3. Use those explanations to make predictions.Science seeks to increase man's knowledge and to use that knoledge to directly or indirectly benefit man.

The main goal of science has been building knowledge and understanding, regardless of its potential applications.

What is Science ?

The intellectual and practical activity encompassing the systematic study of the structure and behaviour of the physical and natural world through observation and experiment.

For example, investigating the chemical reactions that an organic compound undergoes in order to learn about its structure.

Therefore, The main goal of science has been building knowledge and understanding, regardless of its potential applications.

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What is one example of a scientific model? (this is science I don't know why can't find it on "pick a subject" so yeah)

Answers

Answer:

Explanation:

I’ll try helping

well there’s multiple types of scientific models what kind are you looking for?

Hydrogen peroxide is commonly used to clean cuts and wounds. Its chemical formula is
H2O2. This compound has _____.

two atoms of hydrogen
three atoms of oxygen
three atoms of hydrogen
one atom of oxygen

Please help, take your time!

Answers

Answer:

two atom of hydrogen,two atom of oxygen

two atoms of hydrogen and two atoms of oxygen

Why do scientists need to be able to use math?

Answers

Many answers. For example because for science experiment researcher they use math to calculate an amount of effected, people and therefore analyze it by those numbers
To make sure that the amount of whatever they’re using is correct

PLZ HELP I WILL GIVE BRAINLY AND 50 POINTS
Put the steps of the scientific method into the correct order.

Devise an experiment to prove or disprove.
State conclusions.
Conduct a literature search.
Define the problem.
Propose a hypothesis.

Answers

Answer:

1.  State problem

2. Form hypothesis

3.  Conduct experiment

4.  Interpret data

5.  Draw conclusion

Explanation:

Here’s a random answer so that you can give the original answerer brainliest
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