Which of the following is o physical property? a) Plammability b) Reactivily with acid (C) Melling point d. Rust forma flon which of the following is a chemical property? a) Density b) Color c) Ability to burn xo Solubility in water which process involves a chemical change a)Boiling water b) Dissolving sugar in water C) Rusting of iron đj Melting ice What happens during a chemical change? a) A substance changes its state D) The chemical identity of the substance changes c) Only the appearan ce changes d) Energy is not absorbed or released Which of the following is a chemical property of wood? a) Its density b) Its color (C) Its ability to burn d) Its hardness Which of the following describes a physical change? (a) Jron rusting b) Baking a cake c) Tearing a piece of paper d) Burning gasoline

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Which of the following is o physical property? a) Plammability b) Reactivily with acid (C) Melling point d. Rust forma flon which of the following is a chemical property? a) Density b) Color c) Ability to burn xo Solubility in water which process involves a chemical change a)Boiling water b) Dissolving sugar in water C) Rusting of iron đj Melting ice What happens during a chemical change? a) A substance changes its state D) The chemical identity of the substance changes c) Only the appearan ce changes d) Energy is not absorbed or released Which of the following is a chemical property of wood? a) Its density b) Its color (C) Its ability to burn d) Its hardness Which of the following describes a physical change? (a) Jron rusting b) Baking a cake c) Tearing a piece of paper d) Burning gasoline

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Answer 1

Let's break down these questions about physical and chemical properties:

Understanding Physical and Chemical Properties

* Physical Properties: These are characteristics that can be observed or measured without changing the substance's chemical composition. Examples include color, density, melting point, boiling point, and hardness.
* Chemical Properties: These describe how a substance reacts with other substances or how it changes its chemical composition. Examples include flammability, reactivity with acids, and the ability to rust.

Answering the Questions

1. Which of the following is a physical property?
* (c) Melting point is the correct answer. Melting point is the temperature at which a solid changes to a liquid, a change in state without altering the substance's chemical makeup.

2. Which of the following is a chemical property?
* (c) Ability to burn is the correct answer. Burning involves a chemical reaction (combustion) that changes the substance's composition.

3. Which process involves a chemical change?
* (c) Rusting of iron is the correct answer. Rusting is a chemical reaction where iron reacts with oxygen and water to form iron oxide (rust), a new substance.

4. What happens during a chemical change?
* (b) The chemical identity of the substance changes is the correct answer. Chemical changes involve the formation of new substances with different properties.

5. Which of the following is a chemical property of wood?
* (c) Its ability to burn is the correct answer. Burning wood is a chemical reaction that changes the wood's composition.

6. Which of the following describes a physical change?
* (c) Tearing a piece of paper is the correct answer. Tearing paper only changes its shape and size, not its chemical composition.

Key Takeaways

* Physical changes are temporary and reversible (like melting ice).
* Chemical changes are permanent and involve the formation of new substances (like burning wood).

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