Chemistry Middle School

A little help please

Answers

Answer 1

Answer: Cell

Explanation: The cell is the most basic unit of life.

Answer 2

the most basic unit of life is a cell

Related Questions

pls helps and no files since my school have blocked things like that on my computer

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I did this the answer is B

the answer is b. hope this helps

Brainlist for best answer!!!
Describe the difference between primary and secondary succession.

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n primary succession, newly exposed or newly formed rock is colonized by living things for the first time. In secondary succession, an area previously occupied by living things is disturbed—disrupted—then recolonized following the disturbance.

Answer:

Primary succession is the colonizing of a new environment that lacks organisms and plant life.

In secondary succession, an area previously occupied by living things is disrupted then recolonized following the disturbance

Explanation:

A solution that contains more OHions than H30+ ions, is called a(n)... O A. base O B. acid O C. neutral solution O D. isosolution

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Answer:

Explanation:

hellppppppppp due today

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Answer:

umm sorry but some times do it your self

Explanation:

Answer:

its too much and the people that say download here and put bit . ly blah blah are fake.

Explanation:

Explain the concept of the conservation of mass during a change in the state of matter.

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Answer: The law of conservation of mass states that mass in an isolated system is neither created nor destroyed by chemical reactions or physical transformations. According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants.

Answer:

The law of conservation of mass states that mass in an isolated system is neither created nor destroyed by chemical reactions or physical transformations. According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants. this is what I think I hope I didn't get the same answer as anyone else.

Explanation:

One difference between a book and a movie is that with a book you are(1 point)

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Answer:

inerpreting an author's words and using imagination to picture events

Explanation:

please mark this answer as brainlest

Answer:

interpreting an author's words and using imagination to picture events

For a chemical reaction in a closed system, mass cannot be ______________ or _______________. We can say that throughout the reaction mass is _____________.
A rearranged; destroyed; gained
B created; destroyed; lost
C rearranged; created; conserved
D created; destroyed; conserved

Answers

Answer:

D created; destroyed; conserved

For a chemical reaction in a closed system, mass cannot be created or destroyed. We can say that throughout the reaction, mass is conserved.

What is a closed system?

A closed system is a thermodynamic term. It can also be said as thermodynamic system. In a thermodynamic closed system, there is no exchange of mass or energy with the outer environment.

Thus, the correct option is D. created; destroyed; conserved.

Learn more about closed system

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this is prolly ez but im kinda d.u.m.b

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Answer:

Explanation:

The atomic number is also the number of electrons, hope i could help!

18!! the atomic number is also same as the electrons !

Can anyone help me with this since it is a quiz and I am really bad at chemistry!!

Answers

Answer:

Down below <3

Explanation:

1. 1 [tex]N_{2}[/tex] + 3 [tex]H_{2}[/tex] ---> 2 [tex]NH_{3}[/tex]

2. 2 [tex]KClO_{3}[/tex] ---> 2 KCl + 3 [tex]O_{2}[/tex]

3. 1 [tex]Na_{3}PO_{4}[/tex] + 3 HCl ---> _ 3_ NaCl + 1 [tex]H_{3}PO_{4}[/tex]

4. 1 [tex]C_{2}H_{6}O[/tex] + 3 [tex]O_{2}[/tex] ---> 2 [tex]CO_{2}[/tex] + 3 [tex]H_{2}O[/tex]

ASAP LIKE RIGHT NOW
What is the frequency of a wave?

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Answer:

The number of waves that pass a fixed point in a given amount of time

Explanation:

Alfred Wegener proposed the theory of continental drift around 1912. Which of these components of his theory is now known to be FALSE?
Select one:

a. Similar plants and animals live on continents separated by oceans.

b. All existing continents were once joined into a supercontinent.

c. The boundaries of many neighboring continents fit together.

d. The Moon’s gravity and Earth’s spin can move the continents.

Answers

It should be D because
- A is true. There are fossils that have been found in in different places but separated by oceans
- B is true because of Pangea
- C is true because Pangea was broken into chunks that make up our earth today

The component of Alfred Wegener's theory that is known to be false is as follows:

The Moon’s gravity and Earth’s spin can move the continents.

Thus, the correct option for this question is D.

What is continental drift?

Continental drift may be defined as the process of the gradual movement of continents as the result of the motion of tectonic plates. It is a type of hypothesis that illustrates that the Earth's continents have migrated over geologic time with respect to each other.

This theory by Alfred Wegener demonstrates that similar kinds of plants and animals live on continents separated by oceans. According to him, all existing continents were once joined into a supercontinent known as Pangea. The boundaries of many neighboring continents fit together due to the gradual splitting of Pangea.

Therefore, the Moon’s gravity and Earth’s spin can move the continents is the component of Alfred Wegener's theory that is known to be false. Thus, the correct option for this question is D.

To learn more about Continental drift, refer to the link:

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Help please ASAP just with number 10

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What is a medium? In science.

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Answer:

A medium is a substance that allows any material to travel through it.

Explanation:

What is the smallest unit of an element that retains the properties of that element?
A.Eletrons
B.Molecule
C.Neutron
D.Atom

Answers

Answer:

Atom

Explanation:

The smallest unit which maintains an element's properties is an atom.

An atom is the smallest unit of matter that retains all of the chemical properties of an element.

Plz help ill give brainlist‼️‼️How do molecules become substances???

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This is what I found!!! I hope this helps!!!!

Answer:

When two or more molecules/atoms join together to create chemical bonds

Explanation:

I learned Physics :)

HAVE A GOOD DAY SHAWTYY

HELPP "Can you seperate a mixture using solubility tests, if so, explain how."

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Answer:

yes you can by using filtration and evaporation

Answer:

You can by using evaporation and filtration methods.

Explanation:

I hope this helps! Have a great rest of your day!

Which medical condition(s) can prevent molecules from entering the cell?

Answers

Answer:

cell membrane disease

Explanation:

Cell member disses....

What type of bird egg is this btw i live in sc i found it in my backyard my dog was about to step on it
pls say right answer

Answers

snake snake break the egg and eat it’s delicious

Keep it warm, it’s a snake egg but it shouldn’t be a poisonous one

WILL GIVE BRAINLIEST NO SPAM OR LINKS THEY WILL GET REPORTED
How can a force act directly on an object? Explain.

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Answer:

The quantity of force is expressed by the product of mass (m) and acceleration (a). Mathematically the equation can be written as

F = ma

Where,

F= Force

m = mass

a = acceleration

When a force acts on an object the objects the objects have different effects of force. So let us know about the effects of force on an object.

Explanation:

Answer:

Explanation:

An applied force is a force that is applied to an object by a person or another object. If a person is pushing a desk across the room, then there is an applied force acting upon the object.

Which statement is true about the elements in the periodic table?

1.Elements in family 2 are all nonmetals.
2.Elements in period 4 are all metals.
3.Elements in period 6 have similar properties.
4.Elements in family 7 have similar properties.

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Answer:

Option 4 is the right of ur question

4.Elements in family 7 have similar properties.

Which statement is true about the elements in the periodic table?
Elements in family 2 are all nonmetals.
Elements in period 4 are all metals.
Elements in period 6 have similar properties.
Elements in family 7 have similar properties.
(Please don't send a link to a different site and just tell me which one it is)

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The correct answer is elements in family 7 have similar properties because elements in the same group or family have the same number of valence electrons.

Answer:

Give the other person brainliest

Explanation:

In a covalent bond electrons are ____ between atoms.

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Answer:

In a covalent bond electrons are shared between atoms

Answer: shared

A covalent bond involves electrons being shared between atoms so the answer is shared

I don´t understand any of this!!

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where?

question

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A solution of sodium iodide is added to a solution of potassium nitrate to make a potassium iodide precipitate and a sodium nitrate solution?
Key Words
KNO3
NaNO3
KI
NaI

Answers

Answer:

NaNO3

Explanation:

Sorry If its incorrect

The addition of a solution of sodium iodide and potassium nitrate has been the displacement reaction.

The reaction has resulted in the formation of the precipitate of Potassium iodide and Sodium nitrate.

The chemical equation for the reaction can be:

[tex]\rm NaI\;+\;KNO_3\;\rightarrow\;NaNO_3\;+\;KI[/tex]

The reaction has been an exothermic reaction with the formation of the pale yellow precipitate of the potassium iodide.

For more information about potassium nitrate, refer to the link:

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PLEASE HELP MEEE I WILL MARK BRAINLIST FOR THIS ITS SUPER SIMPLE....BUT U MUST TYPE EVERYTHING needed ASAP
all I need you to do its to type out these pictures word for word it pretty simple

Answers

Answer:

Other Causes of Extinction in addition to habitat destruction, other human-caused probelms are also threatening many species. These include issues associated with climate change, pollution, and over-population.

Invasive Species as we have learned earlier in the unit, invasive or non-native species can also change an ecosystem. When invasive species enter an ecosystem's dynamic and cause a disruption to the flow.

Habitat Destruction Your habitat can be altered, and you can easily adapt. Most people live in a few different places and go to a number of different schools throughout their life. But a plant or animal may not be able to adapt to a changed habitat.

Humans often destroy the habitats of other organisms. Habitat destruction can cause the extinction of species.

Extinction is the complete disappearance of a species. Once a species is extinct, it can never recover.

Explanation:

A 50 gram piece of glass with the specific heat of 0.84 J/gºC is heated from 35°C to 46°C. How much heat is added to the glass?
А
11
B
193 J
С
462 J
D
1470 J

Answers

The answer is C- 462 J

The answer is C: 462 J

Out of metal, Non-metal and metalloids. which one needs contact to transfer heat?

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Metal because it’s a conductor to heat

Metal, hope it helped

Please Help me on this question

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acids: taste sour, has a pH less than 7
bases: tastes bitter, has a pH greater than 7

Help please ASAP just with number 11

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Answer:

*A frogs response to prey is (innate)* meaning an inborn and natural phenomenon due to their instinct.

what they are saying when they say how time could change that. This could be a number of things, aging, humans feeding them, and running out of their own food from another species being introduced to their home.

Explanation:

Because if it doesn’t save itself then it will die

Please help I’ll mark Brainlyist !! (No links)

What is a subduction zone?

A ) where less dense oceanic crust pushes underneath more dense continental crust.

B ) Where plates diverge

C ) where more dense oceanic crust pushes underneath less dense continental crust.

D ) where plates transform

Answers

Answer:

A is correct option you can go for it

Answer:

Explanation: The denser oceanic crust gets bent and puller under beneath the lighter continental crust (less dense).

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