Chemistry Middle School

What internal physical structure protects the organs and supports the body of the animal? Fur Feathers Skeleton Skin

Answers

Answer 1

Answer:

Skeleton

Explanation:

Answer 2

Answer:

skeleton

Explanation:

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

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.

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.

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

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

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

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.

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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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

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

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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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

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

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:

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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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

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

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 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.

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

Here’s your answer 0.5 g/cm3

2 g / cm3 18g/cm3 one is 0.5G/ cm3 and the other 2 g / cm 4

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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