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100 terms

01_A: CH4 Sections 1-8 Questions

STUDY
PLAY
freezing
Liquid to Solid
Boiling / Evaporating (the difference between the two is how fast or rapid)
Liquid to Gas
condensation
Gas to Liquid
sublimation
Solid to Gas
deposition or vapor deposition
Gas to Solid
2(a) WATER VAPOR: Element, Compound, Homogeneous Mixture, or Heterogeneous Mixture?
Compound
2(b) OXYGEN GAS: Element, Compound, Homogeneous Mixture, or Heterogeneous Mixture?
Element
2(c) ALCOHOL DISSOLVED IN WATER: Element, Compound, Homogeneous Mixture, or Heterogeneous Mixture?
Homogeneous Mixture
2(d) OIL FLOATING ON WATER: Element, Compound, Homogeneous Mixture, or Heterogeneous Mixture?
Heterogeneous Mixture
Which of the following is a gaseous nonmetal under normal conditions: cobalt, phosphorus, arsenic, chlorine, iodine?
Chlorine
Which of the following compounds has physical and chemical properties similar to those of metallic silver: AgCl, AgI, Ag2COc?
None, the properties of compounds are not similar to their constituent elements.
An aspirin tablet dissolves in water without producing bubbles. Is this an example of a physical change or a chemical change?
physical change
An Alka-Seltzer tablet dissolves in water and produces bubbles. Is this an example of a physical change or a chemical change?
chemical change
Igniting a 1.000-g magnesium flare produces 1.658 g of magnesium oxide smoke. What is the mass of oxygen in the air that reacted with the magnesium metal?
Applying the conservation of mass law, the mass of oxygen is found to be .658 g
What happens to the kinetic energy and velocity of gaseous molecules when the temperature increases?
As temperature of a gas increases, the kinetic energy of the molecules increases. As the kinetic energy of a gas increases, the velocity of the molecules increases.
The substance has a fixed shape. (name the state)
Solid Physical State
The substance has a variable volume. (name the state)
Gaseous Physical State
The substance compresses negligibly. (name the state)
Solid Physical State
The substance has a variable state. (name the state)
Liquid Physical State
The substance has a fixed volume. (name the state)
Solid Physical State
The substance compresses significantly. (name the state)
Gaseous Physical State
The substance has a variable shape.(name the state)
Gaseous Physical State
What describes the movement of individual particles in the gaseous physical state?
unrestricted movement of individual particles
Indicate whether heat energy is absorbed or released for the physical state of solid to liquid.
heat energy is absorbed
Indicate whether heat energy is absorbed or released for the physical state of liquid to gas.
heat energy is absorbed
Indicate whether heat energy is absorbed or released for the physical state of gas to solid.
heat energy is released
Indicate whether heat energy is absorbed or released for the physical state of gas to liquid.
heat energy is released
Indicate whether heat energy is absorbed or released for the physical state of liquid to solid.
heat energy is released
Indicate whether heat energy is absorbed or released for the physical state of solid to gas.
heat energy is absorbed
Distinguish between a pure substance and a mixture.
A pure substance has properties that are fixed. A heterogeneous mixture has properties that vary within a given sample; a homogeneous mixture has properties that vary from sample to sample.
Earth's crust is a _____________ mixture.
Heterogeneous mixture
Earth's atmosphere is a _____________ mixture.
Homogeneous mixture
Earth's oceans is a _____________ mixture.
Homogeneous mixture
Earth's rivers is a _____________ mixture.
Homogeneous mixture
Chlorine gas: pure substance or mixture?
pure substance
Oxyacetylene Gas: pure substance or mixture?
mixture
Salt water: pure substance or mixture?
mixture
Table salt: pure substance or mixture?
pure substance
Classify IRON METAL as an element, compound, homogeneous mixture, or heterogeneous mixture.
element
Classify IRON ORE as an element, compound, homogeneous mixture, or heterogeneous mixture.
Heterogeneous mixture
Classify IRON OXIDE as an element, compound, homogeneous mixture, or heterogeneous mixture.
compound
Classify STEEL ALLOY as an element, compound, homogeneous mixture, or heterogeneous mixture.
homogeneous mixture
Alloys are _____________ mixtures.
homogeneous mixture
Classify OXYGEN GAS as an element, compound, homogeneous mixture, or heterogeneous mixture.
element
Classify BRASS ALLOY as an element, compound, homogeneous mixture, or heterogeneous mixture.
homogeneous mixture
Classify ALUMINUM OXIDE as an element, compound, homogeneous mixture, or heterogeneous mixture.
compound
Name the three most abundant elements in Earth's crust.
oxygen, silicon, and aluminum
Name the three most abundant elements in the human body
Oxygen, carbon, and hydrogen
What is the atomic number for hydrogen?
1
What is the atomic number for potassium?
19
What is the atomic number for lead?
82
List the eight semi metals.
Boron, Silicon, Germanium, Arsenic, Antimony, Tellurium, Polonium, Astatine
State whether each of the following properties is more typical of a metal or non-metal. (A) shiny luster, (B) gaseous state, (C) malleable, (D) reacts with metals and nonmetals
(A) shiny luster METAL, (B) gaseous state NONMETAL, (C) malleable METAL, (D) reacts with metals and nonmetals NON METAL
State whether each of the following properties is more typical of a metal or of a nonmetal. (A) shiny liquid at 500c, (B) low melting point, (C) ductile, (D) reacts with metals
(A) shiny liquid at 500c METAL, (B) low melting point NON METAL, (C) ductile METAL, (D) reacts with metals NON METAL
State whether each of the following properties is more typical of a metal or of a nonmetal: (A) shiny solid, (B) brittle solid, (C) low density, (D) forms alloys
(A) shiny solid METAL, (B) brittle solid NON METAL, (C) low density NON METAL, (D) forms alloys METAL
The mass ratio of C:H:O in natural vitamin C is 9:1:12. Predict the mass ratio of synthetic ascorbic acid (vitamin C) produced in a laboratory.
The mass ratio of the elements in vitamin C is 9:1:12.
Joseph Proust prepared copper carbonate in the laboratory and determined the Cu:C:O mass ratio to be 5:1:4. Predict the mass ratio of copper carbonate in the naturally occurring mineral.
5:1:4.
State the atomic composition for a molecule of the compound of aspirin, C9 H8 O4
9 Carbon atoms, 8 Hydrogen atoms, 4 Oxygen atoms
Write the chemical formula for the vitamin retinol: 20 carbon, 30 hydrogen, and 1 oxygen atom
Retinol C20 H30 H1
What is the total number of atoms in a molecule of the following compound citric acid (in citrus fruit) C3 H4 OH(COOH)3
21 atoms
What is the total number of atoms in a molecule of the following compound lactic acid (in sour milk), C2 H4 (OH)COOH
12 atoms
The reddish-brown color of copper is a_______ property. (physical/chemical)
physical
The high melting point of copper is a_______ property. (physical/chemical)
physical
The conducts heat and electricity of copper is a_______ property. (physical/chemical)
physical
Copper oxidizes in air is a_______ property. (physical/chemical)
chemical
The shiny metallic luster of cobalt is a_______ property. (physical/chemical)
physical
The high density of cobalt is a_______ property. (physical/chemical)
physical
The malleable and ductile properties of cobalt is a_______ property. (physical/chemical)
physical
Cobalt reacts with acid is a_______ property. (physical/chemical)
chemical
Titanium pulls into a fine wire. (physical/chemical)
physical property
Zinc generates an odorless gas in acid. (physical/chemical)
chemical property
Yellow phosphorus ignites in air. (physical/chemical)
chemical property
Chromium conducts heat. (physical/chemical)
physical property
Ether is flammable. (physical/chemical)
chemical property
Bromine is a reddish-orange liquid. (physical/chemical)
physical property
Ethanol vaporizes at 78c. (physical/chemical)
physical property
Steam condenses to water at 100c.
physical property
Dissolving (chemical or physical change)
physical change
Burning (chemical or physical change)
chemical change
Rusting (chemical or physical change)
chemical change
freezing (chemical or physical change)
physical change
oxidation(chemical or physical change)
chemical change
vaporization(chemical or physical change)
physical change
sublimation(chemical or physical change)
physical change
combustion(chemical or physical change)
chemical change
cutting aluminum foil(chemical or physical change)
physical change
Caramelizing sugar(chemical or physical change)
chemical change
adding air to a tire(chemical or physical change)
physical change
igniting a sparkler(chemical or physical change)
chemical change
hydrogen and oxygen explode(chemical or physical change)
chemical change
bromine vaporizes to gas(chemical or physical change)
physical change
methanol freezes to a solid(chemical or physical change)
physical change
calcium oxidizes to a white powder
chemical change
baking soda fizzes in water(chemical or physical change)
chemical change
vinegar and oil separate into two layers
physical change
a flaming fireplace releases heat
chemical change
a helium balloon decreases in size
physical change
If 10.0 g of zinc powder reacts with 4.91 g of yellow sulfur powder, what is the mass of the zinc sulfide product.
14.91 zinc sulfide
If 0.750 g of orange mercury oxide decomposes to 0.695 g of liquid mercury and oxygen gas, what is the mass of oxygen produced?
.055 g
melting
Solid to Liquid