States of Matter
What separation technique could be used to separate two atoms that do not react together (one is solid one is liquid)?
What is filtration?
What is electronegativity and what factors affect it?
What is the tendency of an atom to attract shared pair of electrons, core charge and atomic radius?
What is the electron configuration of the most non-metallic (electronegative) character?
What is Fluorine: 1s22s22p5?
What is the relative atomic mass of chlorine?
What is 35.45?
What is electronegativity and what factors affect it?
What is the tendency of an atom to attract a shared pair of electrons, core charge and atomic radius?
What causes a polar bond to form? Can a polar molecule dissolve in water?
What is an unequal distribution of charge within a molecule, caused by atoms with different electronegativities bonding? What is yes?
How do you tell which block of the periodic table an element is in?
What is based on the sublevel its valence electrons fall in?
What is the condensed electron configuration of lead?
What is [Xe] 4f¹⁴ 5d¹⁰ 6s² 6p²?
Why is relative atomic mass calculated?
Why is to provide an average of the isotopes and more accurately predict chemical reactions?
How does the number of valence electrons relate to the first ionisation energy of an atom?
What is the smaller number of valence electrons, the lower first ionisation energy?
An atom, A has a smaller atomic radius than atom B. Which one requires more energy to change state from liquid to gas?
What is Atom A?
How many sets of chemical elements are there in the periodic table and what are they? (Sets being noble gases, etc,...)
What is 10: alkali metals, alkaline earth metals, noble gases, halogens, actinides, transition metals, lanthanides, metals, metalloids, non-metals?
What is the full electron configuration of an element with the second electron affinity of 545 kJ/mol?
What is Sulfur: 1s22s22p63s23p4?
Calculate the relative atomic mass of selenium
74Se = 0.89%
76Se = 9.37%
77Se = 7.63%
78Se = 23.77%
80Se = 49.61%
82Se = 8.73%
What is 79.04? (no units)
How does atomic radius of atoms relate to its electron configuration?
What is the larger atomic radius, the more electrons shells?
When matter is changing states, why does the temperature not increase or decrease?
Why is energy being put into the matter instead of being used to overcome the intermolecular forces between the bonds?
What group in the periodic table has the first ionisation energies of 1402, 1012, 944, 831 and 703 kJ/mol?
Which elements are an exception to the standard electron configuration and why? What category are these and what rule does this violate?
What is chromium (Cr) and copper (Cu). They are transition metals that are exceptions to standard electron configurations because they achieve greater stability by having their d-subshells either half-filled d⁵ or completely filled d¹⁰, rather than partially filled. What is the Aufbau principle?
Argon has 3 isotopes: argon-36, argon-38 and argon-40. Based on the reported atomic mass, which isotope is the most abundant in nature.
What is Argon-40 because 40 is closest to the relative atomic mass?
A figure shows the visible line emission spectrum of hydrogen. Which electron transition is most likely responsible for the red line in the spectrum?
What is n = 3 ⟶ n = 2?
What state of matter are group 16 elements likely to be in naturally and why?
What are gases because they're super stable, so won't bond with other elements?
What is the benefit of the periodic table for understanding atoms?
What allows us to quickly be able to see different characteristics in an organised way and compare them?
What is the electron configuration of the element with a first ionisation energy of 547kJ/mol?
What is Europium? What is [Xe] 4f⁷ 6s²?
Element X has high electronegativity, a negative first electron affinity and a positive second electron affinity. What element is this? When calculating its relative atomic mass, what is it measured relative to and why?
What is Oxygen? What is measured relative to carbon-12? Why is Carbon-12 very abundant and stable?
Why do lithium and oxygen have different states of matter at room temperature?
Why is the amount of valence electrons they have mean that lithium does metallic bonding and oxygen is a diatomic gaseous molecule naturally?