Podcast
Questions and Answers
Which of the following best describes the state of matter known as a liquid?
Which of the following best describes the state of matter known as a liquid?
- Has no definite shape or volume.
- Exists at extremely high temperatures and is ionized.
- Has a definite volume, but takes the shape of its container. (correct)
- Has a definite shape and volume.
A physical change alters the chemical composition of a substance.
A physical change alters the chemical composition of a substance.
False (B)
What property of matter is defined as the mass per unit volume?
What property of matter is defined as the mass per unit volume?
Density
The ability of a substance to dissolve in a liquid is known as ______.
The ability of a substance to dissolve in a liquid is known as ______.
Match each state of matter to its description.
Match each state of matter to its description.
Which of the following is an example of a chemical change?
Which of the following is an example of a chemical change?
According to the Law of Conservation of Matter, matter can be created or destroyed in a chemical reaction.
According to the Law of Conservation of Matter, matter can be created or destroyed in a chemical reaction.
Give an example of a physical property that can be observed without changing the substance into something new.
Give an example of a physical property that can be observed without changing the substance into something new.
The temperature at which a substance changes from a solid to a liquid is known as its ______ point.
The temperature at which a substance changes from a solid to a liquid is known as its ______ point.
Which of the following is considered a chemical property of matter?
Which of the following is considered a chemical property of matter?
Matter is anything that has mass and takes up space.
Matter is anything that has mass and takes up space.
These describe how a substance reacts with other substances.
These describe how a substance reacts with other substances.
Matter can change in two ways: what are they?
Matter can change in two ways: what are they?
The Law of Conservation of Matter states that matter cannot be created or destroyed in a chemical reaction; it only changes [blank].
The Law of Conservation of Matter states that matter cannot be created or destroyed in a chemical reaction; it only changes [blank].
Name the three main states of matter and give an example for each.
Name the three main states of matter and give an example for each.
What is the difference between physical and chemical properties?
What is the difference between physical and chemical properties?
Identify whether the following are physical or chemical changes: Cutting a piece of paper
Identify whether the following are physical or chemical changes: Cutting a piece of paper
Identify whether the following are physical or chemical changes: Burning a candle
Identify whether the following are physical or chemical changes: Burning a candle
Identify whether the following are physical or chemical changes: Dissolving sugar in water
Identify whether the following are physical or chemical changes: Dissolving sugar in water
What does the Law of Conservation of Matter state?
What does the Law of Conservation of Matter state?
Identify whether the following are physical or chemical changes: Cooking an egg
Identify whether the following are physical or chemical changes: Cooking an egg
Flashcards
What is matter?
What is matter?
Anything with mass that takes up space.
What is a solid?
What is a solid?
Has a definite shape and volume.
What is a liquid?
What is a liquid?
Has a definite volume but takes the shape of its container.
What is gas?
What is gas?
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What is plasma?
What is plasma?
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What are physical properties?
What are physical properties?
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What are chemical properties?
What are chemical properties?
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What is a physical change?
What is a physical change?
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What is a chemical change?
What is a chemical change?
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What is the Law of Conservation of Matter?
What is the Law of Conservation of Matter?
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Study Notes
- Matter is anything with mass that occupies space
- Matter constitutes everything around us
States of Matter
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Matter exists in different states
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Solid matter has a definite shape and volume
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Examples of solids: ice, rock, wood
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Liquid matter has definite volume but adapts to the shape of its container
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Examples of liquids: water, oil, milk
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Gaseous matter lacks a definite shape or volume and expands to fill any container
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Examples of gasses: oxygen, carbon dioxide, steam
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Plasma is considered the fourth state of matter
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Plasma occurs at extremely high temperatures, such as in the Sun and lightning
Physical Properties of Matter
- Physical properties are observable without changing the substance
- Color (e.g., red, blue, green)
- Shape (e.g., round, square, irregular)
- Density is mass per unit volume
- Melting and boiling points are the temperatures at which a substance changes state
- Solubility is the ability to dissolve in a liquid
Chemical Properties of Matter
- Chemical properties describe how a substance interacts with other substances
- Flammability is the ability to burn in oxygen
- Reactivity with acids describes how some metals react with acids to form gasses
- Rusting occurs when iron reacts with oxygen and water to form rust
Changes in Matter
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Matter can undergo physical and chemical changes
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Physical changes alter the form or state of matter without changing its chemical composition
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Examples include ice melting into water, tearing paper, and boiling water
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Chemical changes form a new substance with different properties
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Examples include burning wood, rusting metal, and digesting food
The Law of Conservation of Matter
- Matter cannot be created or destroyed in a chemical reaction but can only change form
- The total mass remains the same before and after a reaction
Conclusion
- Understanding the properties of matter explains how substances interact
- Recognizing physical and chemical changes is essential in science and everyday life
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