EOC REVIEW
Bromine.
3. Draw the Bohr Diagram for Magnesium.
c = speed of light (constant) λ = wavelength ν = frequency
c = speed of light (constant) λ = wavelength ν = frequency E = energy h = Planck’s constant
Isotopes of an atom could be detected based on which of the following characteristics? atomic radius nuclear charge nuclear mass number of electrons
A substance dissolves well in water but not in benzene A substance dissolves well in water but not in benzene. Which of the following can be concluded about the substance? The substance may be either polar or nonpolar. The substance is nonpolar. The substance is polar. The substance is neither polar nor nonpolar.
When bonded with sulfur, which element will most likely form an ionic compound? oxygen calcium hydrogen chlorine
A violent reaction occurs when sodium is placed in water A violent reaction occurs when sodium is placed in water. Which element would produce a similar reaction with water? Mg S K Cr
How many moles of sodium carbonate are in 500. mL of a 0 How many moles of sodium carbonate are in 500. mL of a 0.300-M solution of sodium carbonate? 0.150 mole 0.840 mole 3.18 moles 150. moles
When you are done with an experiment, how should you dispose of used chemicals? Mix all chemicals in a waste container and dump them in the trash. Pour all chemicals down the sink. Follow the intructions given to properly dispose of the particular chemical(s). Mix the chemicals in a flask, and heat the mixture until it evaporates into the air.
Which of the following diatomic molecules has a triple bond?
A 2L sample of helium gas is heated under constant pressure from 20oC to 60oC. What is the final volume of the sample? 2.27 L 1.76 L 6.00 L 0.67 L
The nucleus of an atom emits a particle The nucleus of an atom emits a particle. The particle is equal in size to a helium nucleus. What is this particle? an alpha particle a beta particle a neutron a gamma ray
Which compound will NOT dissolve in water? (NH4)2S FeCO3 Na2S K3PO4
Baking soda is a white powder. It is a base with the formula NaHCO3 Baking soda is a white powder. It is a base with the formula NaHCO3. When vinegar containing acetic acd is poured onto the powder, bubbles appear. This reaction is called carbonation titration neutralization combustion
Which of the following elements is the most electronegative? [He] 2s22p3 [He] 2s22p4 [He] 2s22p5 [He] 2s22p6
Which of the following compounds does not feature covalent bonding? CCl4 KCl H2O O2
Identify the element with an [Ar] 4s2 electron configuration? potassium calcium titanium germanium
Tritium is the form of hydrogen that contains two neutrons and one proton. What is the relationship between tritium and hydrogen? Tritium is an isotope of hydrogen Hydrogen is an isotope of tritium Tritium is an ion of hydrogen Hydrogen is ionized tritium
Which of the following elements is the MOST easily ionized? nitrogen neon carbon lithium
ANSWERS
Na
Bromine. Br
3. Draw the Bohr Diagram for Magnesium.
c = speed of light (constant) λ = wavelength ν = frequency
c = speed of light (constant) λ = wavelength ν = frequency E = energy h = Planck’s constant
Isotopes of an atom could be detected based on which of the following characteristics? atomic radius nuclear charge nuclear mass number of electrons
A substance dissolves well in water but not in benzene A substance dissolves well in water but not in benzene. Which of the following can be concluded about the substance? The substance may be either polar or nonpolar. The substance is nonpolar. The substance is polar. The substance is neither polar nor nonpolar.
When bonded with sulfur, which element will most likely form an ionic compound? oxygen calcium hydrogen chlorine
A violent reaction occurs when sodium is placed in water A violent reaction occurs when sodium is placed in water. Which element would produce a similar reaction with water? Mg S K Cr
How many moles of sodium carbonate are in 500. mL of a 0 How many moles of sodium carbonate are in 500. mL of a 0.300-M solution of sodium carbonate? 0.150 mole 0.840 mole 3.18 moles 150. moles
When you are done with an experiment, how should you dispose of used chemicals? Mix all chemicals in a waste container and dump them in the trash. Pour all chemicals down the sink. Follow the intructions given to properly dispose of the particular chemical(s). Mix the chemicals in a flask, and heat the mixture until it evaporates into the air.
Which of the following diatomic molecules has a triple bond?
A 2L sample of helium gas is heated under constant pressure from 20oC to 60oC. What is the final volume of the sample? 2.27 L 1.76 L 6.00 L 0.67 L
The nucleus of an atom emits a particle The nucleus of an atom emits a particle. The particle is equal in size to a helium nucleus. What is this particle? an alpha particle a beta particle a neutron a gamma ray
Which compound will NOT dissolve in water? (NH4)2S FeCO3 Na2S K3PO4
Baking soda is a white powder. It is a base with the formula NaHCO3 Baking soda is a white powder. It is a base with the formula NaHCO3. When vinegar containing acetic acd is poured onto the powder, bubbles appear. This reaction is called carbonation titration neutralization combustion
Which of the following elements is the most electronegative? [He] 2s22p3 [He] 2s22p4 [He] 2s22p5 [He] 2s22p6
Which of the following compounds does not feature covalent bonding? CCl4 KCl H2O O2
Identify the element with an [Ar] 4s2 electron configuration? potassium calcium titanium germanium
Tritium is the form of hydrogen that contains two neutrons and one proton. What is the relationship between tritium and hydrogen? Tritium is an isotope of hydrogen Hydrogen is an isotope of tritium Tritium is an ion of hydrogen Hydrogen is ionized tritium
Which of the following elements is the MOST easily ionized? nitrogen neon carbon lithium