Chemistry Middle School

The answer for question 2

Answers

Answer 1

Answer:

Explanation:

Question A is correct because all the other are not accurate.

Answer 2

A is the answer because the other ones don’t make sense

Related Questions

Freshwater leeches attach to fish and suck blood from the fish for extended periods of time. This results in sores on the fish that often become infected.

This relationship is best described as .

Answers

Answer:

Parasitism

Explanation:

These celestial bodies are thought to originate from two different sources. Some are called long-period and originate from the Oort Cloud. These bodies orbit the Sun but may take as long as 200 years to complete one orbit. Others are called short-period and originate from the Kuiper Belt in our solar system.

What is this celestial body called?

A) Asteroid

B) Comet

C) Meteor

D) Planet

Answers

It’s c I believe because it says 209 years to complete an orbit so hint yourself ?.....

Yes it would be metror

Jan drew a diagram to compare centipedes and millipedes.

Which belongs in the area labeled Y?

are active predators
have two pairs of legs on each segment
use specialized mouthparts to attach to hosts
use claws to inject venom

Answers

Answer:

BBB millipedes have two sets of legs on each segment.

Explanation:

Answer:

The answer is B:have two pairs of legs on each segment.

Explanation:) hope this helps have a great day ! :)

Brainliest would be very appreciated.!

please help me with this science question, please only answer if you know the answer. also help me asap, thanks

Answers

Answer:

because it was once connected to Africa.

Explanation:

Back in the day, the whole world was a super continent called Pangea and when it started breaking apart due to the tectonic plates, the surface stayed similar, but moved apart

Tectonic plates are underneath the ground that we don’t no that are under the ground and when they push apart the move the ground

If the temperature of the Earth's layers increases by about 90 degrees Fahrenheit for every 1 mile from the surface and you are estimating the temperature of a point in the mantle 160 miles below the surface, how hot would the mantle be at that depth?
A. 12,800°F
B. 14,400°F
C. 1.78°F
D. 160°F

Answers

Answer:

Temperature Range:

On average, the surface of the Earth's crust experiences temperatures of about 14°C. However, the hottest temperature ever recorded was 70.7°C (159°F), which was taken in the Lut Desert of Iran as part of a global temperature survey conducted by scientists at NASA's Earth Observatory.

Explanation:

BRAINLIEST PLZ!!!!!!!!!!!!!!!!!!!!!!!!!!!!

D is the answer hopefully this helped

The International Date Line
Oruns through Greenwich, England
O roughly follows the 0° line of longitude
O is recognized as the location where new days begin
o divides the United States into different time zones

Answers

Answer:

The International Date Line, established in 1884, passes through the mid-Pacific Ocean and roughly follows a 180 degrees longitude north-south line on the Earth. It is located halfway round the world from the prime meridian—the zero degrees longitude established in Greenwich, England, in 1852.

The Miami Blue butterfly is an endangered species in South Florida. Which factor has most likely caused the population decline of this butterfly?

increase in the number of parks

increase in number of homes built

decline in the amount of predators

decline in the amount of seawater

Answers

Answer:

B i think

Explanation:

Answer:

Explanation:

Pleeeeeease help I’ll give brainliest! With number 20.

Answers

Icebergs are moved by winds and currents, drifting either north or south toward Earth's equator, where they eventually melt. They may get stuck by the ocean bottom or even by surrounding sea ice.

According to the pH scale, which pH measurement is basic?

7.0

5.5

1.2

9.5

Answers

Answer:7.0

Explanation: Because acids are 1-3.9, 4 is neutral and bases are 4.1-7

someone already got it but yea its 7.0

How many internal parts or “organelles” are there in a plant cell?

im rewarding brainlist and 47 points too whoever answers this question ;-;

Answers

There is ten over all I believe.

Answer:

There are 15 internal parts in a plant cell.

Explanation:

In YOUR OPINION, should the United States try to reduce the amount of nonrenewable resources we use to produce electricity? Why?

Answers

Answer: Yes because nonrenewable resources will eventually run out and we can transition into a new era of renewable resource use. This transition would also benefit the environment.

Explanation:

this is a in your opinion question so i just gave a basic answer of what i think

Answer:

Yes because renewed sources will eventually run out

Explanation:

Milk (pH 6.7)
Coffee (pH 5)
Ammonia (pH 11.6)
is most basic, and which one is most OH- concentrated

Answers

Ammonia is the most basic and has the highest OH- concentration since it has the highest pH.

Ammonia is the most basic.
Ammonia is also the one with the most OH-concentration (pH 11.6)

The Sun is important in many ways. What is the purpose of the Sun in the food chain? *

Answers

Answer:

Most things, if not all, are dependent on the Sun. The Sun causes things to grow, which causes animals to thrive, which causes other animals to thrive, which causes a balanced ecosystem, meaning a balanced food chain.

Explanation:

the sun gives the plants nutrients and we eat plants and so do animals so therefore with out the sun we would not have life because we would not have food, the sun also gives off energy to solar panels causing electricity.

A restaurant advertises that it is environmentally friendly. It describes the solar panels it uses to generate electricity and the locally grown produce it serves. All the meals it offers are prepared over an open wood fire. Food is served on recycled copper plates, and drinks are served in recycled aluminum cups.

Which correctly lists three renewable resources used by the restaurant?

aluminum, copper, produce
copper, produce, sunlight
produce, sunlight, wood
sunlight, wood, aluminum

Answers

Answer:

produce, sunlight, wood

The renewable resources used by the restaurant are

produce, sunlight, wood

What are renewable resources?

Renewable resources are resources which can be replenished after being used up.

Renewable resources include water, sun energy, wind, trees and animals.

The environmentally friendly restaurant will use things that would not cause environmental damage.

Based on what they use, three renewable resources used by the restaurant are solar energy, locally grown produce and wood.

Learn more about renewable resources at: https://brainly.com/question/79953

Please help me fill this ven diagram in its very simple I just need help

Answers

Answer:

I can think of only one hope this will help

: bone is inelastic while cartilage is elastic

They both are made up of cells embedded in an extra cellular matrix

Help! With 22! And 21! I’ll give brainliest. ASAP!

Answers

21 is c. 22- the water could raise up enough to flow out of the cave. I know 21 correct but not sure about 22

Fill in the blanks:
An ___________ measures wind speed and a _________ shows wind direction.

A.weather balloon; electroscope

B.anemometer; wind vane

C.flask; beaker

D.oscilloscope; seismograph

It's science btw

Answers

Answer:

A.weather balloon; electroscope

Answer is B. Anemometer; wind vane

On the periodic table, which group of elements tend to form positive ions?

Group 16 and Group 17

Group 1 and Group 16

Group 2 and Group 17

Group 1 and Group 2

Answers

group one and two because to form a positive ion, groups one and two are trying to stay stable so they take away electrons

I believe it is group 16 and group 17

How can you describe a mineral that has a measure of 1 on the hardness scale, looks dull, and breaks into square chunks?
A. It is soft, metallic, and has cleavage.
B. It is hard, non-metallic, and has cleavage.
C. It is hard, metallic, and does not have cleavage.
D. It is soft, non-metallic, and does not have cleavage.

Answers

the answer would be b

I believe the best answer is B

Conduction is a method of energy transfer within Earth’s systems. Describe an example of conduction, including where the energy transfer takes place and how conduction occurs.

Answers

Answer:

Conduction is the transfer of thermal energy from one molecule to another within an object. Conduction also happens between two objects in direct contact if they have different temperatures. The hotter molecule vibrates because of the added heat. This vibration and movement transfer the energy to the surrounding molecules. The transfer of energy continues until all the molecules have the same temperature.

Conduction takes place in solids, liquids, and gases. However, it happens fastest in solids because the molecules in solids are closely packed.

Which product has a bitter taste, is slippery when mixed with water, and can damage skin and eyes?

sodium hydroxide

lactic acid

acetic acid

citric acid

Answers

Answer:

sodium hydroxide

Explanation:

its a base and it can damage skin

Sodium hydroxide is the right one (:

Help please with number 3 don’t worry I will give brainliest to the best answer!

Answers

The ice caps, lakes, rivers, and other bodies of water can be found all around the globe

Water is also in the form of ice in glaciers, snow, and water vapor. It is also in the clouds due to the water cycle. It is not always in liquid form.

Which of the following statements BEST relates a star's color to its surface temperature?
Question 5 options:

blue stars have a relavtively high temperature

blue-white stars have a relativey low temperature

red stars have a relavtively high temperature

yellow stars have a relatively high temperature

Answers

blue stars have a relatively high temp,

Help i'll give Brainliest It's important
A student is trying to identify the different forms of energy described in the following chart:

Form of Energy

Description

Example(s)

Energy A

potential and kinetic energy are the basic types
describes how much work an object can do
a speeding car
a pebble sitting at the top of a mountain
Energy B

kinetic energy + potential energy of particles
determines the temperature of a substance
all matter

How should each form of energy be identified?
A. Energy A: gravitational energy
Energy B: chemical energy
B. Energy A: nuclear energy
Energy B: electrical energy
C. Energy A: electromagnetic energy
Energy B: sound energy
D. Energy A: mechanical energy
Energy B: thermal energy

Answers

Answer:

Explanation:

Hey there!
The answer is D
Hope this helps bye!!

HELP ! DUE IN 41 MINUTES!
WILL GIVE BRAINLISIT!!!!!!

Answers

Answer:

they are both chemical changes

Explanation:

I need some help cuz i don't remember what that long word means!!

Answers

The answer is A. 25%

The answer is b 50% because it’s dealing with 2 people

Although Leonardo Da Vinci was well-known for being an artist, how has he contributed to the fields of motion and medicine?

Thx if you help :D

Answers

Leonardo da Vinci was a very talented artist who painted the Mona Lisa, the Last Supper, and many more famous paintings. These works were famous because of Leonardo’s understanding Linear Perspective, his integration of light and shadow, and his superb understanding of anatomy.

Leonardo Da Vinci attempted to create the first airplane, made the first accurate image of the human spine, etc.

help me whith this
Describe the processes of photosynthesis

Answers

Photosynthesis makes food from light

sun light, water, & carbon dioxide turn into glucose-sugar and oxygen

Please help with this science assignment

Answers

1. endoskeleton
2. musculoskeletal system

What identifies the levels of organization that make up the respiratory system in order of increasing complexity?

Answers

Answer: they are lung, lung tissues, and lung cells.

Answer: lung, lung tissue, and lung cell

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