Chemistry, 30.04.2021 22:10 hemriccaleb1213
Question 1 (1 point)
An element in Group 2 of the periodic table likely has which characteristics?
Question 1 options:
shiny solid, conducts heat and electricity, easily bends
shiny solid, does not conduct heat but does conduct electricity, crumbles easily
dull solid, does not conduct heat or electricity, does not bond with other atoms
gas, does not conduct heat or electricity, easily bonds with other atoms
Question 2 (1 point)
Which two elements, in looking at their atoms, have a total of 51 protons between them?
Question 2 options:
Magnesium and Aluminum
Lithium and Scandium
Tin and Hydrogen
both A and B
Question 3 (1 point)
Which of the following is an accurate description of a neutral potassium (K) atom?
Question 3 options:
19 particles in the nucleus and 39 particles outside the nucleus
39 particles in the nucleus and 19 particles outside the nucleus
19 particles in the nucleus and 20 particles outside the nucleus
39 particles in the nucleus and NO particles outside the nucleus
Question 4 (1 point)
Which of the following is an example of a chemical change?
Question 4 options:
a rock being crushed into pieces by a hammer
a rock becoming smaller over time due to wind
a rock's appearance changing over time due to exposure to acid rain
all of the above
Question 5 (1 point)
Which of the following statements is correct?
Question 5 options:
Lithium is a metal, Titanium is a nonmetal
Magnesium and Helium are gases.
Copper and Argon conduct electricity,
Calcium is malleable, Sulfur is not malleable.
Answers: 2
Chemistry, 21.06.2019 16:30
Acetic acid, hc2h3o2, dissolves and completely dissociates in water and a solvation sphere of water molecules forms around the ions. this solute-solvent interaction
Answers: 1
Chemistry, 23.06.2019 03:00
In november 1987, a massive iceberg broke loose from the antartic ice mass and floated free in the ocean. the chunk of ice was estimated to be 98 mi long, 25 mi wide, and 750 ft thick. a typical backyard swimming pool contains about 24,000 gallons of water. how many of these pools could you fill from the water in this iceberg? (assume the iceberg is a rectangular solid of the above dimensions and consists of water only). express answer in scientific notation.
Answers: 3
Question 1 (1 point)
An element in Group 2 of the periodic table likely has which characteristics?...
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