Chemistry Middle School

Part 1: Name two elements that have the same properties as potassium (K). (4 points)
Part 2: Determine the number of protons, electrons, and neutrons present in an atom of magnesium (Mg). Explain how you determined your answer using complete sentences. (6 points)

Answers

Answer 1

Answer:

Part 1: Sodium and Rubidium.

Part 2:

Protons = 12

reason: protons are equal to the atomic number of an atom. For Magnesium, atomic number is 12.

Neutrons:

[tex] = { \tt{24 - 12 }} \\ = { \tt{12 \: neutrons}}[/tex]

reason: neutrons is given by formula:

[tex]{ \tt{neutrons = mass \: number - atomic \: number}}[/tex]

where mass number of magnesium is 24.

electrons: = 12 electrons

reason: Magnesium atom has electrons summing up to 12

Answer 2

part 1: hydrogen and sodium? my memory is so bad ngl

part 2: 36 because there are 12 protons, 12 electrons, and 12 neutrons in an atom of magnesium.

Related Questions

The chemical formula for sulfuric acid is H2SO4. In one molecule of sulfuric acid, there are _____.

two atoms of helium
two atoms of oxygen
four atoms of oxygen
four atoms of sulfur oxide

Please help for my summer school, you can take your time (:

Answers

Answer:

four atoms of oxygen

Explanation:

two atoms of hydrogen

one sulphur atom

Four atoms of oxygen

Quartz, or silicon dioxide (SiO2), is one of the most abundant minerals on Earth. The diagram shows the atomic arrangement of quartz.

Based on the diagram, which statement best describes the atomic arrangement of quartz?
Group of answer choices

An extended structure that is made of repeating patterns of atoms.

A repeating pattern of small molecules that can move freely past each other

Many different kinds of molecules tha combine to form an extended structure.

Many different kinds of atoms that can move freely past each other.

Answers

Based on the atomic arrangement of quartz, it is can be concluded that quartz is an extended structure that is made of repeating patterns of atoms.

What is quartz?

Quartz is a hard crystalline mineral found within the Earth's crust and which is composed mainly of the mineral silica. Silica is mostly silicon(iv) oxide.

Quartz is colourless and its crystalline structure is of a hexagonal prism. The atoms are arranged in a regular repeating grid to form the hexagonal crystal.

Therefore, it is can be concluded that quartz is an extended structure that is made of repeating patterns of atoms.

Learn more about quartz at: https://brainly.com/question/2284988

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