Soal Latihan Kimia 9 Smp A

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.

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.

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.

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.

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.

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.

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.

The given correct answer is "explosif." This symbol is used to indicate chemicals that are explosive.

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.

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).

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.

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.

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.

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.

The correct answer is "Al-khemy." The word "kimia" is derived from the Arabic word "Al-khemy."

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.

The correct answer is "asam lambung, pupuk, minuman berkarbonasi." This is because stomach acid, fertilizers, and carbonated drinks are all examples of acidic compounds.

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.

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-).

Lewis adalah ilmuwan yang menyatakan bahwa basa adalah suatu zat (spesi) yang bertindak sebagai donor pasangan electron.