1.
1. Sesuatu
yang mempunyai massa dan menempati ruang disebut …
Correct Answer
B. Materi
Explanation
The question asks for the term that describes something that has mass and occupies space. The correct answer is "Materi" which is the Indonesian word for "matter". Matter is anything that has mass and takes up space, so it fits the description given in the question.
2.
1. Pertemuan
antara ilmu kimia dengan ilmu fisika menghasilkan ilmu baru yang disebut ….
Correct Answer
C. Kimia fisik
Explanation
Pertemuan antara ilmu kimia dan ilmu fisika menghasilkan ilmu baru yang disebut kimia fisik. Kimia fisik adalah cabang ilmu yang mempelajari interaksi antara materi dan energi, serta prinsip-prinsip fisika yang terkait dengan reaksi kimia. Dalam kimia fisik, konsep-konsep fisika seperti termokimia, kinetika reaksi, dan spektroskopi digunakan untuk memahami dan menjelaskan fenomena kimia.
3.
1. Symbol
yang menyatakan jumlah paling sederhana dari atom-atom yang menyusun suatu
senyawa dan merupakan bilangan bulat, misalkan C6H12O6
menjadi CH2O, disebut…
Correct Answer
C. Rumus empiris
Explanation
The correct answer is "Rumus empiris" (empirical formula). The empirical formula represents the simplest ratio of atoms in a compound and is expressed as a whole number. In this case, the empirical formula of C6H12O6 is CH2O.
4.
1. ‘kimia’
berasal dari bahasa arab yaitu …
Correct Answer
C. Al-khemy
Explanation
The correct answer is "Al-khemy." The word "kimia" is derived from the Arabic word "Al-khemy."
5.
1. Partikel
suatu senyawa ionic yang bermuatan positif disebut …
Correct Answer
A. Kation
Explanation
Kation adalah partikel suatu senyawa ionic yang bermuatan positif. Dalam senyawa ionic, atom logam kehilangan satu atau lebih elektron sehingga membentuk ion positif atau kation. Kation ini akan tertarik oleh ion negatif atau anion dalam senyawa ionic untuk membentuk ikatan ionik. Jadi, kation adalah jawaban yang tepat untuk pertanyaan ini.
6.
1. Berikut
adalah symbol untuk bahan kimia …
Correct Answer
C. Mudah terbakar
Explanation
The correct answer is "Mudah terbakar" because it means "flammable" in English. This symbol is used to indicate that the chemical substance is easily ignited and can catch fire easily.
7.
1. Seseorang
yang mengelola laboratorium disebut ...
Correct Answer
B. Laboran
Explanation
A person who manages a laboratory is called a "laboran". This term is commonly used to refer to individuals who are responsible for overseeing the operations and activities in a laboratory setting. They ensure that proper protocols and safety measures are followed, equipment is maintained, and experiments are conducted accurately. The term "chemist" refers to a person who specializes in the study of chemistry, but it does not specifically indicate a role in laboratory management. Similarly, "librarian" and "labour" are unrelated to managing a laboratory.
8.
1. Manakah
dibawah ini yang merupakan senyawa …
Correct Answer
C. H2SO4, NaCl, HNO3
Explanation
The correct answer is H2SO4, NaCl, HNO3. These are all compounds because they are made up of two or more elements chemically bonded together. H2SO4 is sulfuric acid, NaCl is sodium chloride (table salt), and HNO3 is nitric acid.
9.
1. Nama
dari NH4OH dan Na2SO4 adalah…
Correct Answer
C. Ammonium hidroksida dan natrium sulfat
Explanation
The correct answer is "Ammonium hidroksida dan natrium sulfat" because NH4OH is the chemical formula for ammonium hidroksida and Na2SO4 is the chemical formula for natrium sulfat.
10.
1. Manakah
diantara senyawa berikut ini yang termasuk basa Arrhenius….
Correct Answer
C. Al(OH)3
Explanation
Al(OH)3 is the correct answer because it is a compound that contains hydroxide ions (OH-) which can dissociate in water to release hydroxide ions, making it a base according to the Arrhenius definition of bases. MgSO4, HCl, and CH3COONa do not contain hydroxide ions and therefore do not fit the Arrhenius definition of bases.
11.
1. Bila
suatu asam lemah direaksikan dengan basa kuat akan menghasilkan garam yang
berisfat …
Correct Answer
B. Basa
Explanation
When a weak acid reacts with a strong base, it forms a salt. In this reaction, the weak acid donates a proton (H+) to the strong base, resulting in the formation of a salt and water. Since the strong base completely dissociates in water, it is able to accept the proton from the weak acid and form a new compound called a salt. Therefore, the correct answer is "Basa" (Base).
12.
1. Berikut
ini yang termasuk indicator alami dan indikator buatan adalah …
Correct Answer
C. Ekstrak kunyit dan BTB
Explanation
The correct answer is "Ekstrak kunyit dan BTB" because both turmeric extract (ekstrak kunyit) and BTB (Bromothymol blue) are examples of natural indicators. Turmeric extract is commonly used as a natural pH indicator, turning from yellow in acidic solutions to red in basic solutions. BTB is a synthetic compound that also changes color depending on the pH of the solution it is in. Therefore, both of these substances can be classified as natural indicators.
13.
Berikut
adalah symbol untuk bahan kimia …
Correct Answer
C. Explosif
Explanation
The given correct answer is "explosif." This symbol is used to indicate chemicals that are explosive.
14.
1. Zat
yang dapat berperan sebagai asam sekaligus basa disebut…
Correct Answer
C. Amfoterik
Explanation
Amfoterik adalah zat yang dapat berperan sebagai asam dan basa. Ini berarti zat ini dapat menerima atau melepaskan proton (H+) dalam reaksi kimia. Dengan demikian, zat amfoterik dapat bereaksi dengan baik dengan zat asam maupun basa. Contoh zat amfoterik yang umum adalah air (H2O), yang dapat bereaksi dengan asam untuk membentuk ion hidronium (H3O+) dan bereaksi dengan basa untuk membentuk ion hidroksida (OH-).
15.
Simbol kimia berikut berarti ....
Correct Answer
B. Harmful
Explanation
The given correct answer for this question is "harmful." This means that the chemical symbol mentioned in the question represents a substance that can cause harm or damage. It implies that the substance may have adverse effects on human health or the environment.
16.
Simbol berikut berarti ....
Correct Answer
B. Toxic
Explanation
The given symbol indicates toxicity. This means that the substance represented by the symbol is poisonous and can cause harm to living organisms. It implies that the substance should be handled with caution and proper safety measures should be taken to avoid any negative effects on the environment and human health.
17.
Berikut adalah simbol untuk bahan kimia ....
Correct Answer
B. Berbahaya bagi lingkungan
Explanation
The correct answer is "berbahaya bagi lingkungan". This symbol indicates that the chemical substance is dangerous to the environment. It suggests that the substance has the potential to cause harm or damage to the surrounding ecosystem if not handled or disposed of properly. This symbol serves as a warning to individuals who come into contact with the chemical to take necessary precautions to prevent any negative impact on the environment.
18.
1. Ilmuwan
yang menyatakan bahwa basa adalah suatu zat (spesi) yang bertindak sebagai
donor pasangan electron adalah …
Correct Answer
C. Lewis
Explanation
Lewis adalah ilmuwan yang menyatakan bahwa basa adalah suatu zat (spesi) yang bertindak sebagai donor pasangan electron.
19.
1. Senyawa
asam terdapat dalam beberapa bahan berikut …
Correct Answer
C. Asam lambung, pupuk, minuman berkarbonasi
Explanation
The correct answer is "asam lambung, pupuk, minuman berkarbonasi." This is because stomach acid, fertilizers, and carbonated drinks are all examples of acidic compounds.
20.
1. Reaksi
antara asam dan basa menghasilkan …
Correct Answer
B. Garam dan air
Explanation
When an acid reacts with a base, it forms a salt and water. This is a common reaction known as neutralization. The acid donates a proton (H+) to the base, forming water, while the remaining ions from the acid and base combine to form a salt. Therefore, the correct answer is "Garam dan air" which translates to "Salt and water" in English.