Soal Latihan Bab Materi (Atom, Ion, Molekul)

1. Jika atom netral melepaskan elektron, maka atom tersebut akan menjadi ion positif (kation).

True

False

When a neutral atom loses an electron, it becomes a positively charged ion, also known as a cation. This occurs because the atom now has more protons than electrons, resulting in a net positive charge. Therefore, the statement "Jika atom netral melepaskan elektron, maka atom tersebut akan menjadi ion positif (kation)" is true.

Explanation

When a neutral atom loses an electron, it becomes a positively charged ion, also known as a cation. This occurs because the atom now has more protons than electrons, resulting in a net positive charge. Therefore, the statement "Jika atom netral melepaskan elektron, maka atom tersebut akan menjadi ion positif (kation)" is true.

2. Gabungan antara atom-atom yang tidak sejenis mengakibatkan terbentuknya. . .

Ion

Atom

Molekul unsur

Molekul senyawa

When atoms of different elements combine, they form compounds called molecules. These molecules are made up of two or more different types of atoms bonded together. This process is known as chemical bonding. Therefore, the correct answer is "Molekul senyawa" which translates to "compound molecules" in English.

Explanation

When atoms of different elements combine, they form compounds called molecules. These molecules are made up of two or more different types of atoms bonded together. This process is known as chemical bonding. Therefore, the correct answer is "Molekul senyawa" which translates to "compound molecules" in English.

3. Jodohkan pernyataan berikut berdasarkan muatan yang terdapat pada suatu partikel atom

Partikel atom yang bermuatan negatif.

Partikel atom yang bermuatan positif.

Partikel atom yang bermuatan netral.

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4. Suatu atom atau kumpulan atom yang bermuatan listrik disebut…

Atom

Molekul

Ion

Unsur

An ion is a charged atom or group of atoms. It can be positively charged, called a cation, or negatively charged, called an anion. When an atom gains or loses electrons, it becomes an ion. This charge is due to the imbalance between the number of protons and electrons in the atom. Therefore, an ion is the correct answer because it refers to a charged atom or group of atoms.

Explanation

An ion is a charged atom or group of atoms. It can be positively charged, called a cation, or negatively charged, called an anion. When an atom gains or loses electrons, it becomes an ion. This charge is due to the imbalance between the number of protons and electrons in the atom. Therefore, an ion is the correct answer because it refers to a charged atom or group of atoms.

5. Berikut jodohkan mengenai pendapat beberapa tokoh tentang atom.

Atom merupakan partikel terkecil suatu unsur yang tidak bisa dibagi lagi.

Model atom yang digambarkan mirip roti kismis.

Model atom mirip sistem tata surya.

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6. Atom merupakan bagian yang terkecil dan tidak dapat dibagi lagi dengan reaksi kimia biasa adalah pendapat dari Thomson.

True

False

Thomson's opinion was that atoms are not the smallest and indivisible particles and can be divided further through ordinary chemical reactions. This contradicts the statement given in the question, which states that atoms are the smallest and cannot be divided further. Therefore, the correct answer is False.

Explanation

Thomson's opinion was that atoms are not the smallest and indivisible particles and can be divided further through ordinary chemical reactions. This contradicts the statement given in the question, which states that atoms are the smallest and cannot be divided further. Therefore, the correct answer is False.

7.

Jumlah neutron dan elektron yang dimuliki oleh atom P adalah.....

15 dan 31

16 dan 31

16 dan 15

15 dan 16

The correct answer is 16 and 15. The atomic number of an element represents the number of protons in its nucleus. Since the atomic number of P is 15, it means that it has 15 protons. The mass number of an element represents the total number of protons and neutrons in its nucleus. Since the mass number of P is 31, it means that it has 31 - 15 = 16 neutrons. Therefore, the correct answer is 16 and 15.

Explanation

The correct answer is 16 and 15. The atomic number of an element represents the number of protons in its nucleus. Since the atomic number of P is 15, it means that it has 15 protons. The mass number of an element represents the total number of protons and neutrons in its nucleus. Since the mass number of P is 31, it means that it has 31 - 15 = 16 neutrons. Therefore, the correct answer is 16 and 15.

8. Setiap molekul unsur tersusun dari empat atom unsur.

True

False

The statement is true because it states that every molecule of an element is composed of four atoms of that element. This implies that the molecule is a tetramer, meaning it consists of four identical subunits. This is a valid and accurate statement about the composition of elements at the molecular level.

Explanation

The statement is true because it states that every molecule of an element is composed of four atoms of that element. This implies that the molecule is a tetramer, meaning it consists of four identical subunits. This is a valid and accurate statement about the composition of elements at the molecular level.

9. Materi yang tersusun atas atom-atom sejenis yaitu. . . .

Tembaga

Gula pasir

Garam dapur

Gas Hydrogen

Materi yang tersusun atas atom-atom sejenis adalah tembaga.

Explanation

Materi yang tersusun atas atom-atom sejenis adalah tembaga.

10. Perhatikan data berikut ini : 1. KOH 2. NaCl 3. HNO₃ 4. KNO₃ 5. HCl Yang merupakan senyawa asam adalah nomor ….

1 dan 3

2 dan 5

3 dan 4

4 dan 5

Senyawa asam adalah senyawa yang dapat melepaskan ion H+ (ion hidrogen) ketika dilarutkan dalam air. Dari data yang diberikan, HNO3 (asam nitrat) dan KNO3 (asam nitrat) merupakan senyawa asam karena keduanya dapat melepaskan ion H+ ketika dilarutkan dalam air. Oleh karena itu, jawaban yang benar adalah nomor 3 dan 4.

Explanation

Senyawa asam adalah senyawa yang dapat melepaskan ion H+ (ion hidrogen) ketika dilarutkan dalam air. Dari data yang diberikan, HNO3 (asam nitrat) dan KNO3 (asam nitrat) merupakan senyawa asam karena keduanya dapat melepaskan ion H+ ketika dilarutkan dalam air. Oleh karena itu, jawaban yang benar adalah nomor 3 dan 4.