Mixtures & Solutions Investigations 1 - 4

Matter exists in various forms, but the most commonly known states are solid, liquid, and gas. Each state has distinct properties and behaviors.

A mixture is a combination of two or more materials that are physically combined, not chemically bonded together. It can be solid, liquid, or gas.

In the context of objects and attributes, a property refers to a characteristic that can be used to describe the object, such as its size, color, shape, or texture.

A solution is specifically a mixture where one substance is dissolved in another. It is not a solid substance, a non-dissolving liquid, or a gas mixture.

Dissolving is specifically the process of a solid material dispersing into a liquid, not involving changes between other states of matter like gas or solid. It involves the particles of the solid mixing into the liquid, giving the appearance of disappearance.

When water is added to a cup containing a dry material, the water and solid material typically combine to form a mixture. The dry material may dissolve partially or remain suspended in the water, but they do not remain completely separate as in the case of the other incorrect answers.

Mixtures can be separated using different methods such as filtration, distillation, evaporation, etc. Screens and filters are commonly used for separating mixtures based on particle size.

When salt is mixed with water, it dissolves to form a solution where the salt molecules are dispersed throughout the water, creating a homogeneous mixture. The salt ions are surrounded by water molecules, resulting in a clear solution that cannot be separated by using a filter.

Evaporation is the process by which a liquid turns into a gas without reaching its boiling point. It is commonly seen in the natural environment such as when water evaporates from a pond or a wet surface.

The correct answer involves the process of evaporation where the solvent evaporates leaving behind the solute material.

The correct way to identify the material left behind by evaporation is by examining its physical properties, not through senses like smell, taste, or hearing.

A solvent is the liquid component of a solution that dissolves the solute.

To accurately determine the amount of salt present in a saturated volume of water, it is essential to filter the excess salt and perform a mass measurement as described in the correct answer. The incorrect answers provided are not effective or accurate methods for quantifying the salt content in water.

Solubility refers to the ability of a substance to dissolve in a particular solvent. It is not related to the process of filtration, melting point, or electrical conductivity.

Epsom salts are not meant for consumption and are commonly used for their therapeutic effects in baths.

When comparing the solubility of salt and Epsom salt in water, Epsom salt is the more soluble compound due to its molecular structure and chemical composition.

Carbon dioxide is a common gas in the Earth's atmosphere and is produced through various natural and man-made processes.

Change is the process of transforming or evolving into something different, not staying the same, never evolving, or moving backwards.

Energy is a broad concept that encompasses various forms and can undergo transformations. It is not limited to solid objects and follows the principle of conservation of energy. Energy is a property of physical systems, not a physical substance that can be measured or weighed.

Evidence is crucial in scientific research as it provides support for hypotheses and conclusions based on observations and data. Without evidence, scientific claims lack credibility and validity.

In a chemical reaction, the products are the new substances that are formed as a result of the reaction. They are different from the reactants that initially react and are not the catalysts that facilitate the reaction.

A precipitate is a solid material that is formed when two liquids react chemically to form a solid. It is commonly seen as a solid settling at the bottom of a test tube during a chemical reaction.

Diatomaceous earth is a type of sedimentary rock made up of the fossilized remains of diatoms, which are single-celled aquatic organisms.

A solute is typically a solid substance that dissolves in a liquid solvent to form a solution. It is an essential component in the process of forming a solution.

A saturated solution is one where the maximum amount of solute has already been dissolved in the solvent, leading to equilibrium where no more solute can be added.

When a solution becomes saturated, it means that the maximum amount of solute (in this case, salt) has been dissolved in the solvent (water) at a given temperature. At this point, adding more solute will not result in further dissolution.

A chemical reaction involves the rearrangement of atoms in substances to form new substances with different properties. It does not necessarily require heat, can result in a change in physical state, and can occur naturally outside of a lab environment.

In a chemical reaction, reactants are the substances that undergo a chemical change to form products. They are the starting materials that are consumed during the reaction.