Chemistry Middle School

2. A change in velocity (speed and/or direction) is... *
A.speed
B.Velocity
C. Acceleration

Answers

Answer 1
acceleration cause that is a magnitude
Answer 2
the answer is acceleration

Related Questions

Percolation state of matter, Name and source, and explanation which is definition of Percolation in your own words and shortened

Answers

Answer:Percolare

Explanation:

Answer:

Percolare

Explanation:

Mammals use their lungs to provide oxygen for themselves from the air. Fish spend a majority of their time in the water, and instead, developed gills. What is the function of gills? *

a-Gills break down water into hydrogen and oxygen so the fish can use the oxygen.

b-Gills allow the fish to breathe oxygen in the water and the air.

c-Gills allow the fish to use the oxygen that is dissolved in the water.

d-Gills allow the fish to use the oxygen in the air, but use it more slowly so they can live in water.

The Barber's have a circular flowerbed in their front yard. The want to put fertilizer on ha

Answers

Answer:

C

Explanation:

a fish cant breath outside water

Mammals use their lungs to provide oxygen from the air, while fish spend time in the water; instead, fish developed gills because gills allow the fish to use the oxygen that is dissolved in the water, which is option c.

What is the significance of the gills in animals?

Gills are important for fish and other aquatic animals as they are the primary respiratory organ in aquatic animals, helping them obtain oxygen from water and release carbon dioxide into the surrounding water. Gills in fish and other aquatic animals help them breathe underwater and maintain vital metabolic processes.

Hence, mammals use their lungs to provide oxygen from the air, while fish spend time in the water; instead, fish developed gills because gills allow the fish to use the oxygen that is dissolved in the water, which is option c.

Learn more about the gills here.

https://brainly.com/question/14793690

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Sodium is a metal (Na), what makes the Neutral atom of Sodium different
from the lonized atom of Sodium

A neutral atom has more protons than an ion

Neutral atoms have more neutrons than an ion of an tom

Neutral atoms have a charge while ions do not

Neutral atoms have the same amount of protons and electrons while an ion has
either gained or lost an electron

Answers

Answer:

D

Explanation:

An ion is created because an atom doesn't have a balanced number of protons and electrons. A positive ion is created by an atom losing an electron and a negative ion is created by an atom gaining an electron.

The answer is D. What makes a neutral atom neutral is that it has an even number of protons and neutrons. If the number of protons and neutrons are unbalanced, it is now an ion.

Please help me with this I will give out extra points with the brain thing if you help me with this science question 2/5 image below. I promise

Answers

The answer to your question is B

What molecule makes up 3/4s of the surface of Earth?
A: C6H12O6
B:CO2
C: H2O
D: NaCl

Answers

Je suis presque sûr que c'est C: H20

Answer: H2O
Explanation: Yes

Which of the water alternative energy source has an energy transfer chain of GPE-->KE-->EE?

Answers

Um what’s the question?
Elastic Potential Energy. Uses Gravitational potential energy, kinetic energy and EE.

The substance(s) or molecules at the beginning of a chemical reaction is called a



chemical equation

product

reactant

Answers

Reactant.

A chemical reaction is the process in which atoms present in the starting substances rearrange to give new chemical combinations present in the substances formed by the reaction. These starting substances of a chemical reaction are called the reactants, and the new substances that result are called the products.
Reactant or you can look it up hope this helps

The diagram represents liquid water in a pan on a hot plate. The liquid water is boiling and changing into water vapor. The process of boiling water is considered to be a

Answers

Answer:

I guess c?

Explanation:

take my answer by a grain of salt but the process of boiling water leads to physical change because eventually all water will become water vapor if boiled long enough

C is the answer to this question hope it’s right

which of molecules do u get from food

Answers

Answer:

carbohydrates, proteins and fats.Explanation:

Answer:

Explanation:

Instead, let's start applying what we learned so far by looking at the most common groups of molecules in food: carbohydrates, proteins and fats. These molecules are also called 'macronutrients' and are essential for us from a nutritional point of view.

plz help me on the other two :) i already did the third one

Answers

Energy is lost because only a certain amount of energy is transferred through each trophic level
As you more up to the top of energy pyramids , energy is lost due to things such as excretion

Which three temperature readings all mean the same thing?


273 Kelvin, 100 degrees Celsius, 212 degrees Fahrenheit

100 Kelvin, 0 degrees Celsius, 32 degrees Fahrenheit

273 Kelvin, 0 degrees Celsius, 212 degrees Fahrenheit

373 Kelvin, 100 degrees Celsius, 212 degrees Fahrenheit

Someone please help!

Answers

The last one is correct :)

Answer:

273 Kelvin, 0 degrees Celsius, 32 degrees Fahrenheit

Explanation:

BRAINLIST IF U ARE CORRECT AND ANSWER ALL OF THEM!!!!!!!!!!Match the name of the way water is used to its description.


Drag the answers into the correct boxes.


Water used in businesses such as restaurants, hotels, offices, grocery stores, police stations, and malls.


Water that is delivered to homes and schools.


Water that is used for raising crops in dry areas.


Water used in rural areas where people dig wells.


Commercial Domestic Public Irrigation

Answers

Answer:

I think it is the first one all those places do use water

All these places use water however the best described one is the first one

How many different elements are involved in the reaction shown? Record the answer in the grid. Plz help :))

Answers

Ca=Calcium

Ci=Iron

Ag= Silver

No-Nobelium

The arrow is called a

Answers

the arrow is called a victor
Vector hope this helps:)

Gravitational potential energy is energy due to


being in motion


being on the ground


height above ground


doing work

Answers

Answer:

being on the ground

Explanation:

Answer:

Gravitational potential energy in terms of work done against gravity. ... We define this to be the gravitational potential energy (PEg) put into (or ... Figure 2. The change in gravitational potential energy (ΔPEg) between points A and B

Explanation:

hope this helps

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