States of Matter
Elements, Compounds, & Mixtures
Periodic Table
Physical vs. Chemical
Miscellaneous
100
What state of matter has a DEFINITE shape and DEFINITE volume?
Solid
100
What is a pure substance that cannot be broken down into other substances by chemical or physical means?
element
100
The periodic table is arranged in order of increasing ___________ ____________.
Atomic number (number of protons)
100
A chemical change is a change in which one or more substances combine or break apart to form __________ _______________.
New substances
100
An acid is sour and has a pH number _______ __________ seven.
less than
200
Which state of matter has NO definite shape and NO definite volume?
gas
200
What is a pure substance made of 2 or more elements chemically combined, which can only be separated by CHEMICAL means?
Compound
200
What element has the symbol K?
Potassium
200
Provide an example of a physical change.
Examples: Ripping a piece of paper, crushing a can, dissolving salt in water, etc.
200
Cleaning products, such as soap, ammonia, and bleach are _____________ (acids/bases).
bases
300
Which state of matter has a definite volume and will take the shape of the container it is in?
liquid
300
What are 2 or more substances that are physically together but not chemically combined?
Mixture
300
What is the atomic number of copper?
29
300
Provide an example of a CHEMICAL CHANGE.
Examples: Combustion, rusting (oxidation), tarnishing, frying an egg, baking a cake, bananas turning brown, etc.
300
An explosion is an ____________________ (endothermic/exothermic) reaction, because _________________________________________________.
exothermic it releases energy
400
If we heat up (add energy to) a substance, do it's particles speed up or slow down?
Speed up
400
What is the difference between homogeneous and heterogeneous mixtures?
Homogeneous mixtures look the same throughout. Heterogeneous mixtures do not look the same throughout ( different parts are visible).
400
If carbon has an atomic number of 6, how many protons does it contain?
6 protons (The atomic number is the number of protons in an atom of a particular element.)
400
Name AT LEAST 3 indicators of a chemical change.
* Change in color * Change in odor * Change in temperature * Formation of bubbles * Formation of a solid (or any new substance for that matter)
400
What is the DENSITY of a rock that is 250 g and has a volume of 125 cm^3. (Must have correct label)
2 g/cm^3
500
If an object freezes (goes from liquid to solid), do it's particles speed up or slow down?
Slow down
500
Provide an example of an element, compound, and mixture. (Must be labeled correctly.)
Answers will vary.
500
What is the name of group 18 on the periodic table?
Noble gases
500
What is the principle that the total amount of matter is neither created nor destroyed during any chemical or physical change?
Law of Conservation of Mass
500
Water is considered the "Universal ___________" because it dissolves several substances.
solvent
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