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10thGr Exam Ch2 Q's

10th Grade 2015 Exam Ch 2 Questions

QuestionAnswer
What is matter? Anything that has mass and takes up space
What is the smallest unit of an element that has all the properties of the element? atom
A molecule of water is made from combining hydrogen and water how? chemically
What kinds of substances are pure substances? elements and compounds
What is the term for a substance that cannot be broken down into simpler substances by common chemical reactions? an element
Is a mixture a (pure) substance? no
The smallest unit of a substance that behaves like the substance is called a(n) .... molecule
How should clean air classified? homogeneous mixture
What should be the classification of a liquid that results from stirring one gram of salt into one liter of water until it disappears? homogeneous mixture
What do the chemical properties of a substance tell you about that substance? How it can or can not react chemically
Choose the material of highest density from an image showing particles spaced apart different amounts. Highest density has the least amount of free space between particles.
What are several physical properties of substances? density, color, conductivity, melting point, mass, etc.
What are several chemical properties of substances? flammability, reactivity, ability to rust, etc.
Created by: gstubblefield
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