CHEMISTRY MIDDLE SCHOOL

Is light given off in small particles called photons

Answers

Answer 1
Answer: Yep. it is.... sorry for making this a run on but it needs to be 20characters long
Answer 2
Answer: Yes,light is given off in small particles called photons☺

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MIDDLE SCHOOL

the barometric pressure in breckenridge colorado is (elevation 9600 frleet) is 580 mmhg. how many atmospheres is there​

Answers

Answer:

Explanation:

1 atm = 760 mmHg

HIGH SCHOOL

Which of the following pairs of atoms do NOT exhibit an ionic bond? Select one:a. Cl and Alb. Cl and Bc. Ca and Fd. Rb and S

Answers

Answer:

a. Cl and Al.

Explanation:

Hello,

In this case, considering that the bond's nature is defined by the result of the difference between the electronegativities of the elements constituting the compound, the pair of atoms that do not exhibit an ionic bond is Cl and Al since such difference turns out:

Whose result is not eligible for ionic bond but polar covalent bond as long as ionic bonds are formed when the difference is higher than roughly 1.7.

Best regards.

Option B is correct cuz due to smaller size of B, compound BCl3 is more covalent than AlCl3. Hope it helps
HIGH SCHOOL

#1: Which of the following statements is true? A. In an endothermic reaction, the energy of the products is the same as the energy of the reactants.

B. In an endothermic reaction, the energy of the products is less than the energy of the reactants.

C. In an exothermic reaction, the energy of the products is the same as the energy of the reactants.

D. In an exothermic reaction, the energy of the products is less than the energy of the reactants.

***my answer; D

is that right? @aaronq :)

Answers

Answer: Option (D) is the correct answer.

Explanation:

In an endothermic reaction energy is absorbed by reactant molecules in a chemical reaction as a result energy of products is more than the energy of reactants.  

Whereas in an exothermic reaction energy is released by a chemical reaction as a result energy of reactants is more than the energy of products.  

Therefore, we can conclude that the correct statement is in an exothermic reaction, the energy of the products is less than the energy of the reactants.

Endothermic reactions take in heat from the environment in order to react while exothermic reactions release heat during the reaction. For this, D must be true as the products have less energy because they have released heat during the reaction. A and C are incorrect because they products and reactants are equal and B is wrong because the energy of the products would be more as the reaction took in heat.
MIDDLE SCHOOL

When solid changes directly into a gas, a _____ change called _____ occurs. A. physical; boiling
B. chemical; boiling
C. physical; sublimation
D. chemical; sublimation

Answers

Answer:

The correct answer is

C. physical; sublimation

good luck ❤

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