Sci10 - Matter And Change

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1. Read the first 3 definitions for matter1,2,3.  These are the scientific definitions for matter.  Which of the following is an example of matter?

Explanation

Matter is anything that is made up of stuff and occupies space. Water is made up of a combination of hydrogen and oxygen molecules and takes up space, depending how much of it you have.

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Sci10 - Matter And Change - Quiz

Explore the properties and transformations of matter in the 'SCI10 - Matter and Change' module. Engage with concepts like extensive and intensive properties, chemical changes, and the law of conservation of mass. This quiz enhances understanding of fundamental chemistry principles, suitable for educational settings.

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2. A substance has a definite composition.  In other words, a substance is just a bunch of the same stuff.  For example, if you have a glass of water, water from the middle of the glass is the same as water in the middle of the glass is the same as water at the bottom of the glass. Which of the following are examples of substances?  HINT: select ALL of the correct answers.

Explanation

The question asks for examples of substances, which are defined as having a definite composition. Aluminum foil, sugar, and oil all fit this definition as they are pure substances with specific chemical compositions. Chicken noodle soup and chocolate cookies, on the other hand, are mixtures of different substances and do not have a definite composition.

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3. If we burn the paper (NO!  DO NOT BURN THE PAPER! - I'm just saying, hypothetically speaking), will we be left with paper?  The answer should be no.  In no way is what we have left after burning paper still paper.  Burning something or doing something that changes the material is called a chemical change.  Which of the following are examples of a chemical change?  When looking through the choices, ask yourself, is what I end up with the same as what I started with?  
Also, the following are signs of a chemical change:
1. transfer of energy2. change in color3. production of a gas4. formation of a precipitate, as solid that forms and settles out of a liquid

Explanation

Frying an egg is a chemical change, it changes color.
Freezing water to form ice is not a chemical change; ice is just the solid form of water.
Lighting a match and mixing baking soda and vinegar are chemical changes.
Painting a wall is not a chemical change. It doesn't change the wall itself even though the color changed, the color is still the paint.

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Read the first 3 definitions for matter1,2,3.  These are the...
A substance has a definite composition.  In other words, a...
If we burn the paper (NO!  DO NOT BURN THE PAPER! - I'm just...
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