CHEMISTRY HIGH SCHOOL

An ice cube is placed on a kitchen counter. Which best describes heat flow in this situation

Answers

Answer 1

Answer:

Answer:

D: Heat flows from the counter to the ice, causing the molecules in the counter to move more slowly.

Explanation:

Answer 2

Answer:

Answer: D

Explanation:

edge

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Help PLEASE :DElaborate on the changes in molecular motion of particles as they change from solid to liquid to gas.
Question 16 options:
This is the answer >>>>>>>>As the phase changes occur, the freedom of motion of the particles increases.
As the phase changes occur, the freedom of motion of the particles decreases.
As the phase changes occur, the freedom of motion of the particles compresses.
As the phase changes occur, the freedom of motion of the particles is constant.

Answers

Answer:

A) As the phase changes occur, the freedom of motion of the particles increases.

Explanation:

As the phase changes occur, the freedom of motion of the particles increases.

Which structural adaptation would help a plant survive better in a shady environment? A.
thorns

B.
small leaves

C.
large leaves

D.
brightly colored flowers

Answers

Answer:C.

large leaves

Explanation: I took the test

Which statement describes an intensive property of matter

Answers

An intensive property is a property that does not depend on the amount of the substance in a system being measured. Examples are density and color. The opposite is called extensive where the properties depends on the amount of a substance.

Can you divide II by another factor and still have it be correct? Why or why not?

Answers

Answer:

no, because factors can not be divided

Explanation:

Which molecule contains a triple covalent
bond?
(1) H2 (3) O2
(2) N2 (4) Cl2

Answers

Answer: The correct answer is Option 2.

Explanation:

Covalent bond is defined as the b which is formed by the sharing of electrons between the atoms forming a bond.

Non-polar covalent bond is defined as the bond which is formed when there is no difference in electronegativity between the atoms. When atoms of the same element combine, it results in the formation of non-polar covalent bond. For Example: $N_2,O_2$ etc..

For the given options:

Option 1: $H_2$

Hydrogen is the 1st element of the periodic table having electronic configuration $1s^1$

This element needs 1 electron to attain stable electronic configuration and will form single covalent bond with another hydrogen atom.

Option 2: $N_2$

Nitrogen is the 7th element of the periodic table having electronic configuration $1s^22s^22p^3$

This element needs 3 electrons to attain stable electronic configuration and will form triple covalent bond with another nitrogen atom.

Option 3: $O_2$

Oxygen is the 8th element of the periodic table having electronic configuration $1s^22s^22p^4$

This element needs 2 electrons to attain stable electronic configuration and will form double covalent bond with another oxygen atom.

Option 4: $Cl_2$

Chlorine is the 17th element of the periodic table having electronic configuration $1s^22s^22p^63s^23p^5$

This element needs 1 electron to attain stable electronic configuration and will form single covalent bond with another chlorine atom.

Hence, the correct answer is Option 2.

N2 because it has 5 valence atoms so it needs 3 to have 8, wich is the octet rule, so three is a triple covalent bond

If there is 8 g of a substance before a physical change, how much will there be afterwards?

Answers

8 grams because physical changes dont involve a change in the substance's components, so the matter can not be destroyed, onlt changed.

Answer:

8 g

I took the quiz and because the amount doesn’t change

Other Questions

To titrate 15.00 milliliters of an unknown HCl sample, use 25.00 milliliters of a standard 0.2000 M NaOH titrant. What is the molarity of the HCl

If i add 25 mL of water to 125 mL of a 0.15 M NaOH solution, what will the molarity of the diluted solution be ?

The molecules CH4 and CH3Cl both have tetrahedral shapes. Why is CH4 nonpolar whereas CH3Cl is polar?

Suggest two ways to liquefy the gases.