identify the physical properties of matter can be observed measured without changing chemical identity of matter
Answer (2)
Step 1: Understand "Matter" and "Physical Properties" - Matter: Anything that occupies space and has mass. This includes solids, liquids, and gases.- Physical Properties: Characteristics that can be observed or measured without changing the substance's chemical identity. This means you're not breaking down the substance into different components or creating a new substance. Step 2: Identify Categories of Physical Properties Physical properties fall into several categories: - Appearance: How something looks. This includes:- Color: The hue of the substance (red, blue, green).- Odor: The smell of the substance ( sweet, pungent, odorless).- Texture: How it feels to the touch (e.g., rough, smooth, silky).- Luster: How shiny or dull the substance is.- Transparency: How easily light passes through it (transparent, translucent, opaque).- Physical State: The form the matter takes:- Solid: Definite shape and volume.- Liquid: Indefinite shape, definite volume.- Gas: Indefinite shape and volume.- Measurable Properties: These require tools for measurement:- Density: Mass per unit volume (how tightly packed the matter is).- Melting Point: The temperature at which a solid turns into a liquid.- Boiling Point: The temperature at which a liquid turns into a gas.- Solubility: Ability to dissolve in a solvent (like water).- Conductivity: Ability to conduct heat or electricity.- Hardness: Resistance to being scratched or dented.- Malleability: Ability to be hammered into thin sheets.- Ductility: Ability to be drawn into wires.- Viscosity: Resistance to flow (thickness).- Mass: The amount of matter in an object.- Volume: The amount of space an object occupies. Step 3: Provide Examples For each property, give an example. For instance: - Color: Gold is yellow, copper is reddish-brown.- Melting Point: Ice melts at 0°C (32°F).- Density: Lead is denser than wood.- Conductivity: Copper is a good conductor of electricity. Step 4: Distinguish from Chemical Properties It's crucial to understand the difference. Chemical properties describe how a substance reacts with other substances to form new substances. Examples include flammability (ability to burn), reactivity with acids, and oxidation (reaction with oxygen). These change the chemical identity of the matter.
