Chemistry High School

True or false chemistry. No links.

True Or False Chemistry. No Links.

Answers

Answer 1
Try true that should be right

Related Questions

True or false when heat is added to atoms the molecules vibrate much more slowly

Answers

Answer:

false

Explanation:

The particles are held together too strongly to allow movement from place to place but the particles do vibrate about their position in the structure. With an increase in temperature, the particles gain kinetic energy and vibrate faster and more strongly

Which of these objects has the properties of a solid?
A.
desk
B.
water
C.
rain
D.
milk

Answers

Desk (letter a) (i hope this helps)

Why do scientists create proxies?

Answers

Answer:

Proxies enable scientists to recreate climate conditions in different parts of history.

Explanation:

Proxies are characteristics of the weather in a certain period of time that have been preserved for different weather measurements like temperature, humidity, wind direction, and amounts of precipitation. The reason scientists create proxies because it "enables them to recreate climate conditions from different parts of time to have a better understanding on what weather was like during that time period."

Hope this helps.

What is the majority of the atom composed of *TWO WORD ANSWER* ANSWER ASAP WILL AWARD BRAINLIEST! SCAM ANSWERS WILL BE REPORTED

Answers

Answer:

Most of the atom is empty space. The rest consists of a positively charged nucleus of protons and neutrons surrounded by a cloud of negatively charged electrons. The nucleus is small and dense compared with the electrons, which are the lightest charged particles in nature..

Explanation:

Hope it helps you..

Y-your welcome in advance..

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HELP PLZZZZZZZ ASAP
Which best describe the kinetic energy of the particles in solids, liquids, and gases? Check all that apply.


Particles in solids have low kinetic energy.

Particles in solids have high kinetic energy.

Particles in liquids have moderate kinetic energy.

Particles in liquids have low kinetic energy.

Particles in gases have high kinetic energy.

Answers

1,3 and 5 are the correct answers:))
1, 3, 5 are right
Solids have the lowest amount of kinetic energy and particles in gases have the highest

1.A sample has a mass of 15 g and a volume of 3 mL. Calculate the density.

Answers

Answer:

5 g/mL

Explanation:

The density of a substance can be found by using the formula

[tex]density = \frac{mass}{volume} \\[/tex]

From the question

mass = 15 g

volume = 3 mL

We have

[tex]density = \frac{15}{3} = 5 \\ [/tex]

We have the final answer as

5 g/mL

Hope this helps you.

Particle A has very little mass in comparison to Particle B. Both particles are in the same atom. Which is the best conclusion about Particles A and B?

A) They have the same charge.
B) They are located in the nucleus together.
C) Particle A has a positive charge, and Particle B is neutral.
D) Particle A orbits the nucleus, and Particle B is located in the nucleus.

Answers

The answer to ur quick question is C

Answer:

A) They have the same charge.

B) They are located in the nucleus together.

C) Particle A has a positive charge, and Particle B is neutral.

D) Particle A orbits the nucleus, and Particle B is located in the nucleus.

Explanation:

I need help with this , here are the words ( black,radiation, time, holes and universe

Answers

Black holes….. universe……. radiation……. time

50 POINTS!!!!!!
Reactions that occur spontaneously must reach an energy threshold before they can proceed. The graph shows the amount of energy needed for a reaction to occur. Explain how enzymes are involved in this reaction and can affect the rate of this reaction.

Answers

Remember that enzymes always accelerate chemical equations, depending on what the enzyme is consisted of. As the enzymes are burned the reaction or amount of chemical reactions decreases.

Sodium reacts with chlorine to form the compound sodium chloride, or salt. The chemical formula below shows how the two elements combine into a compound.

2Na + Cl2 → 2NaCl

If the total mass of the reactants is 58.44 amu, what will be the total mass of the products?



116.88 amu

60 amu

58.44 amu

29.22 amu

Answers

Answer:

Its C

Explanation:

The law of conservation of mass says no atoms can be created or destroyed just rearranged so the mass at the beginning before the reaction would stay the same after it

Considering the Law of Conservation of Matter, the correct answer is the third option: the total mass of the products will be the same and has a value of 58.44 amu.

The Law of Conservation of Matter is also called the law of conservation of mass or the Law of Lomonósov-Lavoisier. This law postulates that "the mass is not created or destroyed, only transformed."

This means that the reagents interact with each other and form new products with physical and chemical properties different from those of the reagents because the atoms of the substances are ordered differently. But the amount of matter or mass before and after a transformation (chemical reaction) is always the same, that is, the quantities of the masses involved in a given reaction must be constant at all times, not changing in their proportions when the reaction ends.

In other words, then the mass before the chemical reaction is equal to the mass after the reaction.

So, in this case, if the total mass of the reactants is 58.44 amu, the total mass of the products will be the same and has a value of 58.44 amu.

Finally, the correct answer is the third option: the total mass of the products will be the same and has a value of 58.44 amu.

Learn more:

https://brainly.com/question/13383562?referrer=searchResultshttps://brainly.com/question/14236219

Someone pls help me I will make you brain

Answers

Answer:

c

Explanation:

Answer:

I don't know either

Explanation:

I am sorry i can not answer you

What volume of water has a mass of 1 kg?

Answers

Answer:

the value of water is 1000

Which is a chemical property of hydrogen?
A.
It is a light gas.
B.
It is a combustible gas.
C.
It is a colorless gas.
D.
It has a boiling point of -252.87°C.
E.
It is a good conductor of electricity.

Answers

Answer:

C

Explanation:

It is a colorless

I hope you help by my answee

B, the other answers are physical properties of hydrogen

Hoàn thành dãy biến hóa sau :
S→SO2→SO3→H2SO4

Answers

Answer:

I don't know what your asking

The method of converting from an
amount of one substance to an
amount of another substance using a
balanced chemical equation.

Answers

Explanation:

one substance

+one substance=balanced of chemical equation

1. A unit of mass used to express atomic and molecular weights. One proton or
neutron equals one mass unit.

Atom

Atomic mass

Nucleus

Amy

Protons

Neutrons

Uranium

Electrons

Hydrogen

Answers

Answer:

Atomic mass

Explanation:

It is the unit used o express atomic and molecular weights.

Save
Drag the tiles to the correct boxes to complete the pairs.
Which types of matter are these substances?
Tiles
element
compound
homogeneous mixture
heterogeneous mixture
Pairs
a cloud, which consist of small water droplets
distributed throughout the air
helium, a gas composed of identical atoms
rubbing alcohol, a liquid composed of chemically bonded
carbon, oxygen, and hydrogen atoms
sugar thoroughly dissolved in water
Submit

Answers

Answer:

1.heterogeneous mixture

2.element

3.compound

4.homogeneous mixture

Explanation:

The correct pairs are:

A cloud, which consist of small water droplets - Heterogeneous mixture

Distributed throughout the air

helium, a gas composed of identical atoms - Element

Rubbing alcohol, a liquid composed of chemically bonded - Compound

Carbon, Oxygen, and Hydrogen atoms

sugar thoroughly dissolved in water - Homogenous mixture.

In Heterogenous mixture, the composition of the mixture is not uniform. In Homogenous mixture, the composition is uniform throughout. Element is the combination of same atoms. Compound contains two or more elements.

Therefore, the correct pairs are,

A cloud, which consist of small water droplets - Heterogeneous mixture

Distributed throughout the air

helium, a gas composed of identical atoms - Element

Rubbing alcohol, a liquid composed of chemically bonded - Compound

Carbon, Oxygen, and Hydrogen atoms

sugar thoroughly dissolved in water - Homogenous mixture.

To know more about types of matter, visit:

https://brainly.com/question/28591826

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Write an argument for the people of Westfield identifying the reddish-brown substance

Answers

Hey I just wanted you know I was there and when you

Answer:

lol

Explanation:

How many grams of H2O is needed to produce 0.75 moles of ?​

Answers

Answer:

H2O2 + H2S → 2H2O + S? that is the answer

For which applications would you choose a liquid over a gas or solid?
washing clothes

linking a brake pedal to the brake pads at the wheels of a car

deodorizing a room

carving a sculpture

dissolving sugar

painting a wall

making a gear for a machine

Answers

Answer:

Washing clothes

linking a brake pedal to the brake pads at the wheels of a car

dissolving sugar

painting a wall

Explanation:

Can someone make me a periodic table with color?

Answers

Answer:

The periodic table is also split into four blocks: s = red, p = green, d = yellow, and f = blue.

Could somebody please give me an example of some physical properties for any substance?

Answers

Answer:

A physical property is a characteristic of matter that is not associated with a change in its chemical composition. Familiar examples of physical properties include density, color, hardness, melting and boiling points, and electrical conductivity.

Explanation:

what is a acid and how does it react with metals (chemical reaction)?

Answers

Explanation:

Acids are substances whose ph is lower than 7.Acids react with most metals to form a salt and hydrogen gas.

answer in the blank 1. Broken glass jar 2. Food scraps 3. Cooked rice 4. Plastic bags 5. Water​

Answers

I don't understand ur question

Someone pls help me I will make you brain

Answers

Answer:

the 3rd option is the answer

Dissolving and melting are similar because both
A. result in a change in mass.
B. are kinds of physical change.
C. involve even mixing of substances.
D. result in new substances being formed.

Answers

Answer is B are kinds of physical change.

B.) are kinda of physical change.
Is the correct answer <3

All alkalis are bases but not all bases are alkalis. True or False?

Answers

Answer:

A substance that neutralizes an acid is generally called a base and the basic substances that are soluble in water and alkali and the properties of alkalis are due to these hydroxide ions(OH−). ... - Thus, conclusively it can be said that all alkalis are bases but all bases are not alkali.

Answer:

This is false

Explanation:

it is actually the opposite, all bases don't dissolve in water, but alkali is a base that does dissolve in water. So, alkalis are bases, but not all bases are alkalis

Pinky, message in one of my answers that doesn't have an comment on pls.. i wish i can tlk to u.. but this new system in brainly.. oof

what does the bottom layer represent?

Answers

Answer:

A blanket

Explanation:

bottom layer is a nice comfy blanket you could use to sleep with

Explanation:

Something comfy you can use for yourself or others.

Convert 3,526 meters (m) into kilometers (km). (Don't forget units)
EN
Voranean

Answers

Answer:

3,526 meters (m) into kilometers (km) = 0.003526 kilometers

Explanation:

You have been handed a 1892.6g sample of Rion and determine that it has
a volume of 200.0 mL. What is the density of Rion?

Answers

Answer:

9.46 g/mL

Explanation:

The density of a substance can be found by using the formula

[tex]density = \frac{mass}{volume} \\[/tex]

From the question

mass = 1892.6 g

volume = 200 mL

We have

[tex]density = \frac{1892.6}{200} \\ = 9.463[/tex]

We have the final answer as

9.46 g/mL

Hope this helps you

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