What are atoms that have gained or lost electrons?A. ions
B. isotopes
C. elements
D. molecules

Answers

Answer 1

Answer: They are called... ions.
Ions have negative charges. They also contain more protons than electrons.
I hope this helps!

Answer 2

Answer:

Answer:

IONS

Explanation:

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What happens when the kinetic energy of molecules increases so much that electrons are released by the atoms, creating a swirling gas of positive ions and negative electrons?
In chemistry class, Allen determined the effectiveness of various metals in releasing hydrogen gas from hydrochloric acid. Several weeks later, Allen read that a utilities company was burying lead next to iron pipes to prevent rusting. Allen hypothesized that less rusting would occur with the more active metals. He placed the following into 4 separate beakers of water: (a) 1 iron nail, (b) 1 iron nail wrapped with an aluminum strip, (c) 1 iron nail wrapped with a magnesium strip, and (d) 1 iron nail wrapped with a lead strip. He used the same amount of water, equal amounts (mass) of the metals, and the same type of iron nails. At the end of 5 days, he rated the amount of rusting as small, moderate, or large. He also recorded the color of the water. What is the independent variable?a) the amount of waterb) the metals stripsc) amount of rustd) hydrochloric acid
Is this correct? ***A Chemical Formula shows the elements and ratio of atoms in a compound***

A group of students were discussing the lonization energies of Selenium and Flourine. Which student is correct for the reason why their element has the highest lonization energy? O A Student C says F because the larger the atom, the stronger the attraction between protons and valence electrons. The stronger the attraction the more energy is needed to remove a valence electron. B. Student B says Se because the smaller the atom, the stronger the attraction between protons and valence electrons. The stronger the attraction, the more energy is needed to remove a valence electron. C. Student D says F because the smaller the atom, the stronger the attraction between protons and valence electrons. The stronger the attraction, the more energy is needed to remove a valence electron. OD. Student A says Se because the larger the atom, the stronger the attraction between protons and valence electrons. The stronger the attraction the more energy is needed to remove a valence electron.

Answers

The correct student is Student D, who says that Fluorine (F) has the highest ionization energy because the smaller the atom, the stronger the attraction between protons and valence electrons.

The stronger the attraction, the more energy is needed to remove a valence electron.

Ionization energy refers to the energy required to remove an electron from an atom. Smaller atoms have a stronger attraction between the positively charged protons in the nucleus and the negatively charged electrons in the outermost energy level. As a result, it takes more energy to remove an electron from a smaller atom like fluorine. This is because the electrons are held more tightly due to the stronger attraction.

So, the reasoning provided by Student D correctly explains why Fluorine has the highest ionization energy among Selenium (Se) and Fluorine (F).

Learn more about ionization energy from the link given below.

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I think the Answer is C because Flourine is stronger in electron attraction and is smaller so it has a stronger electronic pull. Hope this helps :)

Technician A says that a soldering gun must be energized for several minutes before it warms up to the melting point of solder. Technician B says that a soldering torch is heated by burning butane gas. Who is right

Answers

Answer:

Both are right

Explanation:

A constant heat must be supplied for several minutes to soldering gun to overcome the melting point of solder. A butane torch is a type of soldering device powered (energised) by the burning of butane gas to melt and solder common metals

Which solution when mixed with a drop of bromthymol blue will cause the indicator to change from blue to yellow

Answers

hello!

bromothymol blue in aqueous solution gives a yellow color.

I hope I helped you

To identify a diatomic gas (X2), a researcher carried out the following experiment: She weighed an empty 4.4-L bulb, then filled it with the gas at 1.00 atm and 22.0 ∘C and weighed it again. The difference in mass was 5.1 g . Identify the gas.

Answers

Answer : The diatomic gas is nitrogen gas, N₂.

Explanation :

First we have to calculate the moles of gas.

Using ideal gas equation:

$PV=nRT$

where,

P = Pressure of gas = 1.00 atm

V = Volume of gas = 4.4 L

n = number of moles of gas = ?

R = Gas constant = $0.0821L.atm/mol.K$

T = Temperature of gas = $22.0^oC=273+22.0=295.0K$

Putting values in above equation, we get:

$1.00atm* 4.4L=n* (0.0821L.atm/mol.K)* 295.0K$

$n=0.1817mol$

Now we have to calculate the molar mass of gas.

$\text{Molar mass of gas}=\frac{\text{Given mass of gas}}{\text{Moles of gas}}$

$\text{Molar mass of gas}=(5.1g)/(0.1817mol)=28.07g/mol$

As we are given that the gas is diatomic X₂.

As, 2 atoms of gas X has mass = 28.07 g/mol

So, 1 atom of gas will have mass = $(28.07)/(2)=14.04g/mol$

From this we conclude that the nitrogen atom has mass of 14.04 g/mol.

Thus, the diatomic gas is nitrogen gas, N₂.

After burning for three hours, a candle has lost half of its mad. Explain why this example does not violate the law of conversation of mass.

Answers

The law of mass conservation depicts that the mass of reactants is equal to the mass of products, so the mass of the candle is changed from solid state to gaseous state which have the same mass of the wasted candle.

What is the law of conversation of mass ?

According to the law of conservation of mass, it has been described that the mass neither formed nor destroyed, it can only transferred from one state to another state.

Due to changes in states of matter, the mass is only rearranged and changed, so during a chemical reaction, the mass of the reactants and the products are same in a closed reaction.

There for when burning the candle it only changes its state from solid to gaseous state that follow the law of conservation of mass.

Learn more about law of conversation of mass , here:

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well from my teacher when we did this experiment she said that I would most likely will violate it unless its covered up!

I really hope I helped thx!

Boron found in nature has an atomic weight of 10.811 and is made up of the isotopes 10B (mass 10.013 amu) and 11B (mass 11.0093 amu). What percentage of naturally occurring boron is made up of 10B and 11B respectively? a. 30:70
b. 25:75
c. 20:80
d. 15:85