Chemistry Chapter 1-5 Test
How many total Atoms? C₆H₄Cl₂
12
How many total atoms? KAl(SO₄)₂
12
How many oxygen atoms? Fe₂(Cr₂O₇)₃
21
How many oxygen atoms? H₃PO₄
4
How many oxygen atoms? Ba(ClO₃)₂
6
How many oxygen atoms? Fe(C₂H₃O₂)₃
6
How many total atoms? CH₃CH₂OH
9
The Alkali Metals are which element symbols?
Li, Na, K, Rb, Cs, Fr
The four properties of metal are:
Luster, Ductile, Malleable, and Conductors
Is this a physical change or chemical change? A few grams of sucrose are placed in a small beaker of deionized water; the sugar crystals "disappear", and the liquid in the beaker remains clear and colorless
Physical
Is this a physical change or chemical change? When a few grams of a blue crystalline solid are placed into a beaker of deionized water, the crystals "disappear" and the liquid becomes clear and blue in color.
Physical
Is this a physical or chemical property? Aluminum is a solid at 25°C
Physical
Is this a physical or chemical property? Fluorine gas has a green-yellow tint
Physical
Is this a physical or chemical property? Sulfur is a bright yellow
Physical
Is this a physical or chemical property? The density of water at 4°C is 1.00 g/mL
Physical
Is this a physical or chemical property? Vinegar has a pungent odor.
Physical
Atomic pass is:
Protons + electrons + neutrons
Earnest Rutherford discovered
That the center of the atom had a small heavy positive center and an electron floating around it
The atomic number is:
The number of protons an element contains
Mass number of an isotope is
The protons + neutrons NOT on the periodic table
"Chemical compounds are formed by the union of two or more atoms of different elements" is part of Dalton's Atomic Theory. True or False
True
"Elements are composed of minute, indivisible particles called atoms" is part of Dalton's Atomic Theory. True or False
True
Chlorine is a Diatomic element. True or False
True
Pure Substance or Mixture? Tungsten
pure substance
Deci (d) =
.1
Kilo (k) =
1,000
Mega (M) =
1,000,000
Earnest Rutherford used
Gold Foil Experiment
List the first 18 elements in order
HHeLiBeBoCNOFNeNaMgAlSiPSClAr
The Nobel Gases are which element symbols?
He, Ne, Ar, Kr, Xe, Rn
Nano (n) =
.000000001
Micro (u) =
.000001
Milli (m) =
.001
Centi (c) =
.01
JJ Thomson discovered
Atoms Consist of two subatomic particles mixed in a ball, the proton and electron
Isotopes are:
Atoms with the same number of protons but different number of neutrons
Metalloids are which elements?
B, Al, Si, Ge, As, Sb, Te, Po, At
The Alakaline Earth Metals are which element symbols?
Be, Mg, Ca, Sr, Ba, Ra
Which is NOT a part of Dalton's Atomic Theory A.) Atoms of the same element are alike in mass and size. B. Atoms of different elements have different masses and sizes. C. The Neutron is a subatomic particle with a neutral charge. D. Chemical Compounds are formed by the union of two or more atoms of different elements
C.
JJ Thomson used
Cathode Ray Tube
Is this a physical change or chemical change? A copper statue, over time, turns green
Chemical
Is this a physical change or chemical change? A woman visits a hairdresser and has her hair colored a darker shade of brown. After several weeks the hair, even though washed several times, has not changed back to the original color.
Chemical
Is this a physical change or chemical change? In the lab, a student mixes 2 mL of sodium hydroxide with 2 mL of hydrochloric acid in a test tube. He notices that the test tube has become very warm to the touch
Chemical
Is this a physical change or chemical change? When a teaspoon of baking soda (sodium bicarbonate) is placed into a few ounces of vinegar, volumes of bubbles are produced.
Chemical
Is this a physical or chemical property? Carbon cannot be decomposed.
Chemical
Is this a physical or chemical property? Copper cannot be decomposed
Chemical
Is this a physical or chemical property? Gold does not tarnish
Chemical
Is this a physical or chemical property? Hydrogen gas is very flammable
Chemical
The Halogens are which element symbols?
F, Cl, Br, I, At
An anion is a negative ion and a cation is a positive ion. True or False
False
Boron is a Diatomic element. True or False
False
Fluorine is a metalloid. True or False
False
Water into ice is a form of chemical change. True or False?
False
Oxygen Nitrogen and Helium are Diatomic elements. True or False
False, not Helium
Democritus discovered the nucleus. True or False
False. Democritus discovered the Atom
The seven Diatomic elements are?
Fl, Cl, Br, I, O, N, H
Pure Substance or Mixture? Brass
mixture
Pure Substance or Mixture? Dirt
mixture
Pure Substance or Mixture? Egg
mixture
Pure Substance or Mixture? Salad Dressing
mixture