Chemistry Handout (Objectives) Flashcards
What is the heaviest subatomic particle?
A. electron
B. proton
C. atom
D. neutron
neutron
When Fe++ changes to Fe+++ in a reaction
A. it loses a proton
B. it gains an electron
C. it gains a proton
D. it loses an electron
it loses an electron
What is the common unit used to indicate the mass of a particle?
A. Atomic mass unit
B. Charge unit
C. Coulomb
D. Gram
Atomic mass unit
What is means a description of the arrangements of atoms or ions in a material?
A. composition
B. mixture
C. component
D. structure
structure
What do you called the horizontal arrangement of elements of increasing atomic number in the periodic table?
A. None of these
B. ions
C. valence
D. period
period
Materials in this group are composed of one or more metallic elements such as iron, aluminum, copper, titanium, gold, and nickel. What is this group called?
A. metals
B. metalloid
C. solids
D. crystals
metals
Which of the following is an alkaline earth metal?
A. Ba
B. Ti
C. Li
D. Na
Ba
What percent of human body is carbon?
A. 25%
B. 18%
C. 15%
D. 20%
18%
Which of the following metallic element has a meaning “heavy stone”?
A. Titanium
B. Iron
C. Cobalt
D. Tungsten
Tungsten
Which of these elements has the highest atomic number?
A. Titanium
B. Uranium
C. Radium
D. Plutonium
Plutonium
In the periodic table of elements, which ONE of the following is light metal?
A. Potassium
B. Mercury
C. Silver
D. Gold
Potassium
What is the metal used to recover copper from a solution of copper sulphate?
A. Na
B. Ag
C. Hg
D. Fe
Fe
These materials include the familiar plastic and rubber materials. Many of them are organic compounds that are chemically based on carbon, hydrogen, and other non-metallic elements. What are these materials called?
A. ceramics
B. polymers
C. non-metallic
D. composites
polymers
The sodium ion in sodium chloride, NaCl, has what charge?
A. +2
B. -1
C. -2
D. +1
+1
The charge of aluminum atom in the aluminum foil is:
A. 0
B. +1
C. +2
D. +3
0
What is the chemical formula of sulfur trioxide?
A. S3O2
B. S3O
C. S2O3
D. S03
SO₃
Give the formula for aluminum nitride
A. Al₂N₂
B. AlN
C. AlN₂
D. Al₂N
AlN
Formula for calcium chloride.
A. CaCl₂
B. Ca₂Cl
C. CaCl
D. CaCl₃
CaCl₂
What are the van der Waals forces?
A. primary bonds between atoms
B. forces not present in liquids
C. forces between electrons and protons
D. weak secondary bonds between atoms
weak secondary bonds between atoms
What kind of bond do you expect in bronze?
A. metallic
B. ionic
C. covalent
D. Van Der Waal’s
metallic
Two major types of chemical bonds are observed in chemical bonding ionic and covalent. Which of the following has a bond that is the least ionic in character?
A. NaCl
B. CH₄
C. H₂
D. H₂O
H₂
How is “molality” defined?
A. the number of moles of solute in 1 L of solution
B. the number of gram-equivalent weights of solute in L of solution
C. the number of moles of solute in 1000 g of solvent
D. the number of gram-formula weights of solute per liter
the number of moles of solute in 1000 g of solvent
The mole is a basic unit of measurement in chemistry. Which of the following is not equal to or the same as one mole of the substance indicated?
A. 22.4 liters of nitrogen gas at STP
B. 6.02x10²³ oxygen molecules
C. 1 g of hydrogen atoms
D. 16 g of oxygen molecules
16 g of oxygen molecules
AMU of neutron
Atomic mass unit: 1.0087
