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Chemistry Unit Zero

Study Guide

QuestionAnswer
Chemistry the study of matter and how it changes
Fill in the blanks: Matter is anything that has _____________ and ________________________________ . weight or mass and takes up space
Identify at least two examples of non-matter: time, sound, sunlight, rainbows
Mass is the amount of matter in an object
Mass and weight are different because weight differs depending on the existence of gravity while mass stays the same no matter where you are
Example of properties of matter size, shape, color, smell, texture, weight, mass, volume, length, height width
Name the 4 states of matter Liquid, solid, gas, plasma
Provide an example of a plasma Stars, lightening, the sun
Fill in the blank: An atom is_______ the smallest unit of matter
Fill in the blank: Molecules are a group of _________ bonded _________ . atom, together
All matter either classifies as a ____________ or a _______________. substance, mixture
Elements and compounds are examples of pure _____________. substances
Describe the difference between an element and a compound An element is made upon of a single types of atom, a compound is a molecule made or more than one type of atom.
Which of these chemical formulas are an element and which classify as a compound: O(2), H(2)O, HCl, He? Element: O(2), He Compound: H(2), HCl
A mixture a blend of two or more _____________, substances
True or False: Mixtures are not chemically bonded and may or may not be uniform throughout. True
What is the total number of elements on the periodic table? 118
How many of the elements of the periodic table are naturally produced? 92
All elements number higher than ______ are ________________ and ___________. 92, unstable or radioactive, man-made
Elements symbols are an ____________ of the element's name. abbreviation
The atomic number is always a _________ number and tells us the number of ___________ is an element. whole, protons
The atomic mass is measured in _______________ units. atomic mass or amu
Atomic mass measures the _______ of a single ______ . mass, atom
Heterogenous mixtures A mixture that does not have a detected pattern. and can be easily separated.
Homogeneous mixtures A mixture that does have a detected pattern and cannot easily be separated.
Examples of homogeneous mixtures: Air, salt water, paint colors
Examples of heterogeneous mixtures Cereal & milk, Skittles
In a chemical formula, the subscript tells us how many of each element is in a substance, True
How many elements are in the formula H₂O? 3 atoms total: 2 H, 1 O or 2 Hydrogen, 1 Oxygen atoms
How many elements are in the formula C₆H₁₂O? 24 atoms total: 6 C, 12 H, 6 O or 6 Carbon, 12 Hydrogen, 6 Oxygen atoms
Is H₂O a substance or mixture? And which type? Substance, compound
CO₂ a substance or mixture? And which type? Substance, compound
Is O₂ a substance or mixture? and which type? Substance, element
Bonus: How many elements are in the formula (SO₄)₃ 15 atoms total: 3 S, 12 O or 3 Sulfur, 12 Oxygen
What is the atomic number for Oxygen? 8
What is the atomic number for Carbon? 6
What is the atomic mass for Nitrogen? 14.007
What is the atomic mass for gold? 196.97
Elements on the periodic table are listed in order their chemical properties. What information does the color of the elements' boxes tell us? If the elements are a type of metal, a metalloid, or a non-metal.
Metals are known for being hi electrical conductors. Which metal group are the high conductors? Alkali metals
What are metalloids? A metalloid has properties of both metals and non-metals.
Identify two examples of noble gases. Helium, Argon, Neon, Krypton, Xenon, Radon
Which state of matter is Mercury at room temperature? Liquid
True or False: Halogens are highly reactive non-metals and are known to form various salts. True
True or false: In general non-metals are poor conductor of electricity. True
Created by: aevans111
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