Identifying Chemicals And Substances

The drawing is illustrating the property of magnetism. This can be inferred from the fact that the other options - ability to conduct electricity, malleability, and ability to conduct heat - do not pertain to the concept depicted in the drawing.

In order to calculate density, both mass and volume must be known. Density is defined as the mass of an object divided by its volume. Mass is the amount of matter in an object, while volume is the amount of space occupied by the object. By dividing the mass by the volume, we can determine how much mass is present in a given volume, which gives us the density of the object. Therefore, both mass and volume are necessary to calculate density.

Evaporation is the correct answer because it refers to the process of water changing from a liquid to a gas. During evaporation, water molecules gain enough energy to break free from the liquid state and become vapor in the atmosphere. This process occurs when the temperature of the water reaches its boiling point or when the water is exposed to heat or air movement. Evaporation is an important part of the water cycle and plays a crucial role in the formation of clouds and precipitation.

Solubility refers to the ability of a substance to dissolve in a solvent to form a homogeneous solution. It is a measure of how well a substance can dissolve in a particular solvent at a given temperature and pressure. Therefore, solubility is the correct answer as it accurately describes the ability of a substance to dissolve.

Salinity refers to the amount of salt present in a substance. It is a measure of the concentration of dissolved salts, specifically sodium chloride, in a given sample. Salinity is commonly used in the context of water bodies, such as oceans, seas, and lakes, to determine the salt content and overall salinity level. This term is widely used in various fields, including oceanography, environmental science, and agriculture, to describe the saltiness of a solution or the salt content in soil or water.

A conductor is a substance that allows electricity and/or heat to pass through it. Conductors have free electrons that can move easily, allowing the flow of electric current. They have low resistance and are commonly used in electrical wires and circuits to transmit electricity efficiently. Examples of conductors include metals like copper and aluminum.

An element is a substance that cannot be broken down into a simpler substance. It is composed of atoms that have the same number of protons in their nucleus. Elements are organized on the periodic table based on their atomic number, which represents the number of protons in an atom. Each element has unique properties and characteristics.

Wood burning is an example of a chemical change because it involves a chemical reaction. When wood burns, it undergoes a combustion reaction, breaking down its chemical structure and releasing heat, light, and gases such as carbon dioxide and water vapor. This is different from physical changes like water evaporating, ice cream melting, or face blushing, which do not involve a change in the chemical composition of the substances involved.

The word "malleable" refers to the ability of a substance to be easily shaped or molded by hammering or pressing. It implies that the substance can be flattened or stretched into a thin sheet without breaking or cracking. This property is often associated with metals like gold and silver, which can be easily beaten into thin foils.

Color is an example of a physical property because it can be observed and measured without changing the substance's chemical composition. Physical properties are characteristics that can be measured or observed without altering the substance's identity. In the case of color, it is an inherent property of an object that can be perceived by the human eye.

Mass is the characteristic or property that is shared by all forms of matter. Mass refers to the amount of matter an object contains, and it is an intrinsic property of matter that remains constant regardless of the object's location or the conditions it is subjected to. This means that whether it is a solid, liquid, gas, or plasma, all forms of matter have mass. Color, oxygen, and chemical make-up are not shared by all forms of matter and therefore do not qualify as the correct answer.

A slice of mushroom pizza represents a mixture because it is made up of different components that can be visually distinguished. The pizza consists of a combination of ingredients such as dough, cheese, tomato sauce, and mushrooms, which are all mixed together to form a single slice. Unlike the other options, which are either pure substances (copper wire, oxygen gas) or homogeneous mixtures (lead fishing weight), the slice of mushroom pizza is a heterogeneous mixture due to its visibly different components.

Alcohol in water is an example of a solution because it is a homogeneous mixture where the alcohol molecules are evenly distributed and dissolved in the water molecules. In a solution, the solute (alcohol) is dissolved in the solvent (water) to form a single phase. The other options, such as melting ice, sand and water, and boiling water, do not meet the definition of a solution as they involve different phases or components that are not uniformly mixed.

Apple juice is a homogeneous mixture because it is a uniform mixture of water, sugars, and other compounds found in apples. In a homogeneous mixture, the components are evenly distributed and cannot be easily distinguished or separated. Apple juice appears the same throughout and does not separate into distinct layers or phases.

During a chemical change, the arrangement of atoms in the substances involved is altered. This means that the atoms are rearranged to form new substances with different properties. This is different from a physical change where the arrangement of atoms remains the same, but the substances may change phase or undergo a change in shape or size. The statement that matter is destroyed during a chemical change is not true, as matter is neither created nor destroyed in a chemical reaction, but rather transformed.