Which of these changes occurs during a nuclear change? A. No energy is involved in the reaction.
B. The nucleus disappears.
C. Matter changes from one state to another.
D. Elements are created that differ from the reactants.

Answers

Answer 1

Answer: The correct answer is D. Elements are created that differ from the reactants.. Because in a eeaction, the product is different than the reactants. Take NaCl for example.

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(Fill in the blank) A kilometer is __________ times bigger than a meter.

Answers

Answer:

1000

Explanation:

kilometer equals to 1000 meters

1 kilometer would be 1000 or 10^3 meters

Describe two ways that thermal energy transfer in earth changes the land

Answers

There are three methods of thermal energy transfer: conduction, convection, and radiation. Air molecules that come into contact with the warmer land and surface of the oceans and lakes increase their thermal energy through conduction.

What is chemical change also referred to

Answers

A chemical change is also referred to as a chemical reaction.

A reaction between an acid and a base is called a(n) ________________ reaction.

Answers

A reaction between an acid and a base is called a(n) neutralization reaction.

* Hopefully this helps:) Mark me the brainliest:)!!

∞ 234483279c20∞

Answer:

the answer to this question is ...........ccccccccccccccccccccccc

Explanation:

the n word neutralization

How are evaporation and condensation alike

Answers

well,condensation is more like gas becoming liquid or solid while evaporation is liquid becoming gas.

the thing those two have in common is that they have been gas or are gas.

Condensation changes gas to solid/liquid. Evaporation turns liquid into gas

How are elements identified in terms of their atoms?

Answers

their identified by the number of protons they have in the nucleus which = their electrons.

Final answer:

Elements can be identified by their atoms through their atomic number, atomic mass, and chemical symbol, all of which are represented on the periodic table. The unique number of protons in an element's atomic nucleus is also identified. This information, combined with the arrangement of elements in the periodic table based on shared properties, reveals the identities of elements.

Explanation:

Elements are identified by their atoms through certain key properties that are represented on the periodic table. These key identifying properties include the atomic number, atomic mass, and the element's chemical symbol. For instance, in the case of carbon, its symbol (C) and name, its atomic number of six (given in the upper left-hand corner), and its atomic mass of 12.01 are displayed in its designated box in the periodic table.

Each element's unique number of protons in its atomic nucleus also helps identify an element. Additionally, the arrangement of elements in the periodic table provides insight into the elements' shared physical and chemical properties - they are arranged in a series of rows and columns based on these similarities. Atoms of elements can further combine and bond with each other in certain ways, based on these unique properties.

By the twentieth century, it was understood that these properties follow a periodic relationship with the atomic numbers, a concept referred to as the periodic law. A modern periodic table, thus, arranges the elements in ascending order of their atomic numbers and groups atoms with similar properties in the same column.