Chemistry Elements and Compounds Quiz

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Questions and Answers

What distinguishes intensive properties from extensive properties?

Intensive properties remain the same regardless of the amount of substance. (correct)

Intensive properties depend on the amount of matter present.

Intensive properties can be measured physically.

Intensive properties change with changes in temperature.

Which of the following is an example of a physical change?

Burning of wood

Melting of ice (correct)

Rusting of iron

Baking a cake

What type of reactions are associated with chemical properties?

Reactions that do not involve energy changes

Reactions that create new substances (correct)

Reactions that are reversible

Reactions that involve physical changes

Which statement about gases is true?

Gases are heavily affected by surrounding pressure and temperature. Signup and view all the answers

What is the importance of phase change?

Phase changes are reversible physical changes due to heat absorption or release. Signup and view all the answers

Which of the following is a pure substance?

Element Signup and view all the answers

Flammability is classified as which type of property?

Chemical property Signup and view all the answers

What happens to gas particles when they gain energy?

They expand to fill their container. Signup and view all the answers

What characterizes a compound?

A combination of two or more different elements Signup and view all the answers

Which of the following best defines extensive properties?

Properties that vary with the quantity of matter present Signup and view all the answers

Which process is an example of a physical change?

Dissolving sugar in water Signup and view all the answers

What defines a chemical property?

The ability of a substance to change into different kinds of matter Signup and view all the answers

Which statement correctly describes the behavior of gases?

Gases will spread out to occupy available space in their surroundings Signup and view all the answers

How does rusting occur?

From a chemical reaction between metal and moisture Signup and view all the answers

What happens during a phase change?

Molecules release or absorb heat resulting in a state change Signup and view all the answers

What is an effect of increasing temperature on gas particles?

Gas particles gain energy and may form plasma Signup and view all the answers

Study Notes

Elements and Compounds

An element is a pure substance made of only one type of atom.
A compound is a substance made of two or more elements chemically combined.

Properties of Matter

Properties describe characteristics of matter.
Physical properties can be observed or measured without changing the substance's composition (e.g., color, mass, volume).
Extensive properties depend on the amount of matter (e.g., mass, volume).
Intensive properties do not depend on the amount of matter (e.g., density).

Physical and Chemical Changes

Physical changes alter the physical form or appearance of matter without changing its chemical composition.
Chemical changes involve the rearrangement of atoms to form new substances, changing the chemical composition.
Chemical properties describe a material's ability to undergo chemical changes.

Examples of Physical Properties

Flammability: Ability to catch fire.
Volatility: Tendency to vaporize.
Rusting: Chemical reaction between metal and moisture (an example of a chemical change).

States of Matter

Solid: Definite shape and volume.
Liquid: Definite volume, but takes the shape of its container.
Gas: No definite shape or volume, takes the shape and volume of its container.

Phase Changes

Melting: Solid to liquid.
Solidification: Liquid to solid.
Vaporization: Liquid to gas (boiling or evaporation).
Condensation: Gas to liquid.
Sublimation: Solid to gas (skipping the liquid phase).

Water

Water is essential to living things; 75% Earth's surface covered by water.

Phase Diagram

Critical point: The temperature and pressure above which a substance cannot be liquefied.
Show different phases and conditions of temperature and pressure for a substance.

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Description

Test your knowledge on the differences between elements and compounds, as well as the properties of matter. This quiz covers physical and chemical changes, and provides examples of physical properties. Challenge yourself and see how well you understand these fundamental concepts in chemistry.