Chemistry Middle School

Objects in the universe vary in their composition. Which of the following best describes the composition of a galaxy?

A. A solar system containing more than one star larger than our sun

B. A collection of asteroids, dust, and gases orbiting each other in space

C. An unidentified object in space that can be seen using a powerful telescope

D. A collection of billions of stars and their satellites held together by gravity

Answers

Answer 1

Answer:

Explanation:

i looked it up

Answer 2

Answer:

Its D

Explanation:

D. A collection of billions of stars and their satellites held together by gravity... My mom teaches science.

Related Questions

identify the location of each element group on the periodic table.

Answers

Answer:

look forward to hearing more about its own to show

I think it’s Metalloids

When a chemical reaction occurs, what happens to the atoms of the two substances? When a chemical reaction does not occur, what happens to the atoms of the two
Substances?

Answers

In a chemical change, the atoms in the reactants rearrange themselves and bond together differently to form one or more new products with different characteristics than the reactants. When a new substance is formed, the change is called a chemical change

Investigate and explain that when a force is applied to an object but it does not move, it is because another opposing force is being applied by something in the environment so that the forces are balanced.

The diagram below shows a box lying on a wedge. Two opposite forces are acting on the box. (1 point)

Force 1 acting downward and Force 2 acting upward on a square box lying on a wedge.

If the box is stationary, which of the following is true about force 1 and force 2?
1. Force 1 Force 2 Comparison of Forces
Gravity Friction Force 1 is stronger than Force 2
2. Force 1 Force 2 Comparison of Forces
Friction Gravity Force 2 is stronger than Force 1
3. Force 1 Force 2 Comparison of Forces
Gravity Friction Force 1 is equal to Force 2
4. Force 1 Force 2 Comparison of Forces
Friction Gravity Force 1 is equal to Force 2

Answers

Answer:

4. Force 1 Force 2 Comparison of Forces

Friction Gravity Force 1 is equal to Force 2

Explanation:

The answer is number 4

help me- i hate science sm-

Answers

returning home. when the graph goes down, you’re going backwards. when it ascends, you are going straight/going up

Personally I would have thought it would be walking down a hill, as the steepness of it

Please help will mark brainliest!

Answers

Answer:

1. desert

2. grasslands

3. rainforest

4. tundra

5. temperate deciduous forest

6. coniferous forest

Explanation:

educated guess, good luck

Please help me I will give you the brain thing with extra points if you help me, please. I need to get this right. 10/10

Answers

The answer would be A! Speed is the number that is on a speedometer in/on a car, and the velocity is the same thing!

Answer:

делай свою домашнюю работу тебе не нужна помощь просто прочитай литературу надеюсь мой ответ помог

Explanation:

это должно помочь

Which of the following statements is true?

A. A solution is a pure substance
B. A solution is a mixture
C. A solvent is dissolved in the solute
D. A solution has the same properties as a colloid

Answers

Answer:

Explanation:

In chemistry, a solution is a special type of homogenous mixture composed of two or more substances. So I believe that it would be B. If it said as such a solute then it would be C.

If you opened a small bottle of ink at the bottom of a swimming pool, what do you think would happen?

Answers

I think the ink will start mixing with the pool water. I think by the end it the water will be the ink color

I know that this question is related to molecules but I think that it would just spread around the pool

What are the extremely small particles that all elements are composed of?

compounds

molecules

atoms

mixtures

Answers

atoms is the correct answer

Atoms is the correct answer

Im not doing the math-

Answers

The average speed of the blocks are 0.36 m/s.
Explanation:
Average speed is defined as the ratio of distance covered per unit time. So if it is said that blocks are pulled to 0.9 m in the right side. This means the blocks cover a distance of 0.9 m from the origin and that distance is covered in 2.5 s. Thus, the average speed can be calculated from the change in speed with respect to time. As at time t = 0 , the speed is also zero, and at time t = 2.5 s , the speed will be
Since, in this case, the speed is equal to the average speed of blocks. So the average speed of the blocks will be 0.36 m/s.

The answer is 0.36 m/s credit to the guy above me (give him Brainlyist) but I also had to do this assessment.

When a nonmetal bonds with another nonmetal, what type of bond is created?

Nonmetals never bond with nonmetals

Metallic

Covalent

Ionic

Answers

Answer: Ionic

Explanation:

Covalent is the right answer: “Covalent bonds form between non metals”
Ionic bonds form between metals and non metals and metallic form between two metals so it couldn’t be those answers

An ionic bond is a bond between...

Answers

Between two oppositely charged ions. Ionic bonds are formed between a cation, which is usually a metal, and an anion, which is usually a nonmetal.

Answer:

i don't know :/ I find answer For u

Explanation:

okay so the answer is

A student is studying the process of weathering and erosion by wind. The student takes down notes shown below:

W: Wind carries away worn down particles with it
X: Wind has small sand particles floating in it
Y: Sand particles rub against rocks, loosening up the rock particles
Z: Small rock particles wear down

What is the correct order of the process of weathering and erosion by wind?(1 point)
1. W → X → Y → Z
2. X → Z → Y → W
3. X → Y → Z → W
4. Z → Y → X → W

Answers

Answer:

Explanation:

Answer number 3- hope it helps

Match the element to its oxidation number.
Sulfur

Answers

Answer:+6

Explanation:

A student climbed up the hill at a constant speed, stopped at the top, and then ran quickly down the other side.

Which graph below most likely represents this scenario?

Answers

Answer:

The Answer Is C

Explanation:

The answers actually A, whoever commented c is lying

Which of the following elements is a poor conductor of heat and electricity?
A. Mg (12)
B. Ti (22)
C. F (9)

Answers

The answer is B I’m pretty sure

Fill in the missing properties in the table below. pleaseeeeeeeeeeeeeeeeee helpppppppppppp

Answers

streak, hardness, crystal form

reaction with acid, magnetism, specific gravity, tenacity, taste, odor , feel, and presence of striations

Answer:

3. Mohs hardness scale

4. Streak

5. Density

6. Crystal

Explanation:

I hope this helps :)

Which two factors decrease as the kinetic energy of the particles in an object decreases?
giving brainliest

a

The object's weight.

b

The object's temperature.

c

The speed of the particles.

d

The size of the particles.

Answers

O not sure but I think it would be D because kinetic energy is moving energy but I really don’t know I just wanted to help

Answer

ummm maybe c or d

dont count on me though!

Explanation:

How can a charged balloon attract a wall without any contact?

The positive charges of the uncharged wall move to the outside.
The wall changes shape and the positive charges move to the inside.
The negatively charged balloon repels and moves away from the wall.
A positive charge in the balloon attracts the negative charges in the wall.

Answers

Answer:

Because it is charged with the opposite type of energy to the wall.

Answer: A

Explanation: The positive charges of the uncharged wall move to the outside.

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