CHEMISTRY MIDDLE SCHOOL

What is the result of an uncontrolled chain reactiona small explosion
a small implosion
a large explosion
a large implosion

Answers

Answer 1
Answer:

A chain reaction is a nuclear reaction that occurs when sufficient unstable nuclei are present so that when one splits (decays), its products hit other unstable nuclei, causing them to decay and initiating a chain reaction.

If this reaction goes uncontrolled, a massive explosion occurs. Such a reaction is the type that went uncontrolled when nuclear bombs were dropped over Hiroshima and Nagasaki in World War II. A chain reaction is much like dominoes all in a row; when one goes down, they all go down in order. The only way to block the chain reaction is to pull out a domino or to block the fall so the "chain" is broken.

The amount of fissionable material needed to accomplish a spontaneous chain reaction is called the critical mass. The critical mass for U-235 is about 1 kg. This explosive fission process takes place quickly, and an incredible amount of energy is released when it occurs.

So it would be C.
Answer 2
Answer:

the answer for this is c

Related Questions

You start with an equimolar mixture of the gases SO₂ and O₂ in a container. The SO₂ and O₂ react to completion to form SO₃. If the temperature after the reaction is 25°C and the pressure in the container is 1.65 atm, what is the density of the product gas mixture? Assume ideal behavior.
A container holds 800 mL of a gas at 25.0 C and 745 tore. What will be the volume of the gas of the pressure is increased to 790 torr and the temperature remains constant at 25.0C
Which of the following energy changes occurs as a bow is drawn and released?1. gravitational potential to chemical potential 2. magnetic potential to kinetic3. elastic potential to kinetic 4. kinetic to thermal
Scientists predicted Adamantium would have an Atomic radius of 327 pm. Once the element was measured experimentally, they found that the atomic radius was really 312 pm. Calculate the percent error of their prediction
What happens to sound waves then the source of a sound is moving toward you?

True or false. The epicenter of the earthquakr is directly below the focus

Answers

True because imagen the earth's crust the epicenter is in the bottom of the focus
The epicenter is where the Earthquake practically starts from. The epicenter is, in a sense, the focus. But in other words, this is true. 

the mass of a 125 cm3 piece of material is 82.75 g. determine the density of this material . please explain

Answers

you would do 82.75 divided by 125 cm3 and get 0.6620 g/cm3 because to find density you mist divide mass and volume and grams is always mass and cm3 or mL is always volume. hope i helped!

Question 17 (Multiple Choice Worth 1 points)Metamorphic rocks can be formed from

sedimentary rocks
igneous rocks
metamorphic rocks
all of the above

Question 18 (Multiple Choice Worth 1 points)

Thermal expansion is an example of

mechanical weathering
chemical weathering
erosion
molecular weathering

Question 19 (Multiple Choice Worth 1 points)

Erosion is the

movement of rock from one place to another
breakdown of rock due to physical means
breakdown of rock due to chemical means
compaction and cementation of small rock particles

Question 20 (Multiple Choice Worth 1 points)

Sediment being placed at a new location by erosion is known as

transportation
placement
deposition
installation

Question 21 (Multiple Choice Worth 1 points)

Which process describes large areas of land being converted into cities?

Deforestation
Desertification
Suburban sprawl
Urbanization

Question 22 (Multiple Choice Worth 1 points)

A rock showing signs of intense heat and pressure is found at the top of a mountain. This is most likely what type of rock?

Igneous
Metamorphic
Sedimentary
None of the above

Question 23 (Multiple Choice Worth 1 points)

Which of the following is a positive effect of building a bridge?

Destruction of wildlife habitat
Dredging
Pollution from construction
Ease of traffic movement

Question 24 (Multiple Choice Worth 1 points)

The most accurate way to date a rock is by using

relative dating
absolute dating
the law of superposition
estimates based on where it is found

Question 25 (Multiple Choice Worth 1 points)

A mineral that breaks in a rough jagged way is said to exhibit

cleavage
fracture
spiral
shatter

Question 26 (Multiple Choice Worth 1 points)

One positive effect of deforestation is

decreased natural beauty
increased farm land producing food for people
increased erosion
decreased animal habitat

Answers

17. not sure
18. not sure
19. movement of rock from one place to another
20. deposition
21. Urbanization
22. sedimentary
23. ease of traffic movement
24. absolute dating
25. fracture
26. increased farm land producing food for people

Al2(SO4)3 + BaCl2 balanced equation

Answers

Answer:BaCl2 + Al2(SO4)3 -->BaSO4 + AlCl3.

Explanation:

What group of elements are the most reactive group of conductive
solids?

Answers

Answer: group 1(alkali metal)

Explanation:

Answer:

the answer is the alkali metals

Asexual organisms, as compared to sexual organisms, tend to be smaller, have shorter life spans, and produce little or no genetic variability between generations. This makes it harder for an individual asexual organism to survive and reproduce. What is one advantage that asexual organisms have that helps them to overcome these disadvantages?They never need to sleep.
A They are able to find food easier.
B They have higher reproductive rates.
C They use energy more efficiently.

Answers

Answer: B They have higher reproductive rates.

Asexual reproduction is a mode of reproduction, which takes place in simple organisms. This mode of reproduction does not require the formation of gametes by the living organisms. The offsprings produced are usually larger in number as compared to those produced in the sexual mode of reproduction. The offsprings are genetically identical to the parent organisms.

Although, the life span of the asexually reproducing organisms is low, and the organisms produced are typically shorter than the sexually reproducing organisms. But, they have higher reproductive rates than sexually reproducing organisms. This because of the fact that these organisms are simple. They do not require to form or develop sex cells like sexually reproducing organisms. They just require favorable environment conditions to develop a new organism. For example, budding in yeast, the bud develops as an outgrowth on mother yest cell, which detaches in maturity and germinate to form new yeast organism.

They have higher reproductive rates and therefore the young have more of a chnce of surviving
Other Questions
What type of bond is methane?
- How do scientists measure the strength of acids and bases? Describe this scale.
How are electrical currents and magnetic fields related
Steve puts some cheddar cheese in a pan on the stove and starts to melt it. After a little while, there is a layer of oil floating on top of the cheese. From the way the cheese melted, Steve knows it is aA ElementB SolidC MixtureD Pure Substance.