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 18:00, ReveenatheRaven2296
Which type of reaction always has an element and a compound as reactants
Answers: 1
Chemistry, 22.06.2019 01:00, mutoni55
Consider three unlabeled bottles, each contain small pieces of one of the following metals. - magnesium - sodium - silver the following reagents are used for identifying the metals. - pure water - a solution of 1.0 molar hcl - a solution of concentrated hno3 (a) which metal can be easily identified because it is much softer than the other two? describe a chemical test that distinguishes this metal from the other two, using only one of the reagents above. write a balanced chemical equation for the reaction that occurs. (b) one of the other two metals reacts readily with the hcl solution. identify the metal and write the balanced chemical equation for the reaction that occurs when this metal is added to the hcl solution. use the table of standard reduction potentials (attached) to account for the fact that this metal reacts with hcl while the other does not. (c) the one remaining metal reacts with the concentrated hno3 solution. write a balanced chemical equation for the reaction that occurs. (d) the solution obtained in (c) is diluted and a few drops of 1 m hcl is added. describe what would be observed. write a balanced chemical equation for the reaction that occurs.
Answers: 2
Chemistry, 22.06.2019 19:00, QuestionsAnsweredNow
Suppose that a certain fortunate person has a net worth of $71.0 billion ($7.10Γ1010). if her stock has a good year and gains $3.20 billion (3.20Γ109) in value, what is her new net worth?
Answers: 3
Chemistry, 22.06.2019 19:30, 2020sanchezyiczela
Draw the lewis structure for the trisulfur s3 molecule. be sure to include all resonance structures that satisfy the octet rule.
Answers: 3
Question 1 (1 point)
An element in Group 2 of the periodic table likely has which characteristics?...
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