What is chemical bond in which one atom loses an electron to form a positive ion and the other atom gains an electron to form a negative ion
100
What is the bond energy?
What is the energy required to break the bonds in 1 mol of a chemical compound.
100
What is enthalpy
What is the total energy content of a sample.
100
What is the enthalpy change of one mole of a pure substance?
What is molar enthalpy change.
200
How is the periodic table arranged?
What is by atomic number.
200
What is the energy realeased when ionic bonds are formed?
What is lattice energy.
200
What is the electronegativity difference for nonpolar covalent, polar covalent, and ionic bonds.
What is 0-0.5 for nonpolar covalent, 0.5-2.1 for polar covalent, and 2.1-3.3 for ionic.
200
The molar heat capacity of tungsten is 24.2 J/K mol. Calculate the energy as heat needed to increase the temperature of 0.40 mol of tungsten by 10.0 K.
What is 97 J.
200
Calculate the molar enthalpy change of H2O when liquid water is heated from 41.7 C to 76.2 C. water 75.3 J/K mol.
What is 2.60x10^3 J/mol
300
What is the periodic law?
What is the law that states thatwhen the elements are arranged according to their atomic numbers, elements with similar properties appear at regular intervals.
300
What is one way to identify a compound as ionic.
What is solid at room temperature, hard and brittle, have high melting and boiling point, or good conductors of electric current in the liquid state.
300
What is a structural formula in which dots are used to represent valence electrons?
What is Lewis structure.
300
Calulate the energy as heat needed to increase the temperature of 0.80 mol of nitrogen N2 by 9.5 K. The molar heat capacity of nitrogen is 29.1 J/K mol.
What is 220 J.
300
What is the molar enthalpy change when tungsten is heated by 15 K. Tungsten- 24.2 J/K mol
What is 3.6x10^2 J/mol.
400
What is a measure of the ability of an atom in a chemical compound to attract electrons?
What is electronegativity.
400
Is CaSO4 an ionic bond?
What is yes.
400
What is the shape of NH3?
What is trigonal pyramidal.
400
Calculate C for indium metal given that 1.0 mol In absorbs 53 J during the following process.
In(s,297.5 K)--> In(s, 299.5 K)
What is 26 J/K mol.
400
The molar heat capacity of Al(s) is 24.2 J/K mol. Calculate the molar enthalpy change when Al(s) is cooled from 128.5 C to 22.6 C.
What is -2.56x10^3 J/mol.
500
Why does atomic radius decrease as you move across a period?
What is because each atom has 1 more proton and 1 more electron than the atom before it has. All additional electron don't go into the inner levels.
500
Is C7H16 an ionic bond?
What is no.
500
What is the shape of SnCl2?
What is bent.
500
A calorimeter has a heat capacity of 1265 J/C. A reaction causes the temperature of the calorimeter to change from 22.34 C to 25.12 C. How many joules of heat were released in this process?
What is 3.52 kJ released.
500
Calculate the molar enthalpy change when mercury is cooled 10 K. The molar heat capacity of mercury is 28.7 J/K mol.