Noble gases Study guides, Class notes & Summaries

Smooth round stone - Becomes smooth by being in a stream for a long time Astronomical body - Revolves around a larger body, called a satellite Element without neutrons - Hydrogen Atoms in a molecule of water - 2 Argon and Neon - Noble gases Processes of the water cycle - Evaporation, condensation, sublimination Germination - Demonstrated by bean seeds between moist paper towels Water droplets - Result of condensation Friction - Opposes motion between 2 surfaces Reproduction by spawning ...

ASVAB Test Practice (Geo), Picat - mechanical Comprehension, Carlos Mechanical Comprehension, asvab, Shop Information, ASVAB, Shop Information, Part 8- Shop Information, Automotive Information, ASVAB EI, Electronic Information, Electronic information 100% Solved it was in a stream for a long time - answer Which of these is the best explanation of how a smooth round stone became smooth? Regeneration - answer When a lobster grows a claw to replace the one that was lost, the proc...

When polonium (atomic mass 210 & atomic number 84) emits an alpha particle, which of the following decay products results? a. Bismuth (atomic mass 209 & atomic number 83) b. Lead (atomic mass 206 & atomic number 82) c. Thallium (atomic mass 204 & atomic number 81) d. Mercury (atomic mass 201 & atomic number 80) - correct answer b. Lead (atomic mass 206 & atomic number 82) Atomic Mass is: a. the number of protons in the nucleus b. the total number of protons & neutrons in the nucleus c...

Mixture with uniform density throughout and no distinguishable coponents.Answer - Homogeneous Mixture Mixture in which the components are readily distinguished.Answer - Heterogeneous Mixture A change in which the checmical composition of a substance remains the same.Answer - Physical Change A change in which the chemical bonds are broken and reformed to create a new and different substance.Answer - Chemical Change The simplest of substances and is represented by a specific letter...

Why do the boiling points of H2O and HF deviate from the trend in Figure 1? A. F and O and both found in the second period. B. The size of H2O and HF are small relative to those of the other molecules. C. H2O and HF are less polarizable than the other molecules. D. H2O and HF can hydrogen bond. ANS - D What type of intramolecular bonding occurs in MgCl2? A. Covalent B. Ionic C. Hydrogen D. Dipole-induced dipole ANS - B Why do the boiling points of the noble gases increase as the peri...

What term describes the purpose of the Air Force Medical Service unit's purpose? - Answer-Mission Sustaining the performance, health and fitness of every Airman is best described as a part of the Air Force Medical Service's. - Answer-mission Air Force Medical Service effects can best be describe as the ______. - Answer-health service support the medics bring to the fight Which Air Force Medical Service effects include identifying, assessing and controlling health hazards? - Answer-Preven...

CEM 141-Exam 1 Latest Update Already Graded A Matter is made up of Atoms The the smallest distinguishable part of an element Atom Can change overtime according to the evidence available Theories ALL atoms/molecules attract to one another due to Electrostatic forces ________ lower potential energy of a system Attractions _____ raise potential energy of a system Repulsions Stable systems form where The attractive and repulsive forces are EQUAL or the potential energy is at a minimum The ...

Radon Measurement Questions with complete solution 2023/2024What are the 5 properties of Radon? - correct answer - Radioactive - An inert gas (not chemically reactive, noble gas) - Naturally occurring - Denser than other gases - Odorless, colorless, tasteless What are the basic parts of an Atom - correct answer - Nucleus (protons=+ and Neutrons=neutral) - Orbital electrons What is atomic mass - correct answer Sum of protons and neutrons Atomic Number - correct answer number of pro...

Why do the boiling points of H2O and HF deviate? A. F and O and both found in the second period. B. The size of H2O and HF are small relative to those of the other molecules. C. H2O and HF are less polarizable than the other molecules. D. H2O and HF can hydrogen bond. ANS - D What type of intramolecular bonding occurs in MgCl2? A. Covalent B. Ionic C. Hydrogen D. Dipole-induced dipole ANS - B Why do the boiling points of the noble gases increase as the period increases? A. The bonds...

it was in a stream for a long time - ANSWER-Which of these is the best explanation of how a smooth round stone became smooth? Regeneration - ANSWER-When a lobster grows a claw to replace the one that was lost, the process is called a satellite - ANSWER-Any astronomical body that revolves around a larger body is called carbon atoms - ANSWER-In chemistry, to be classified as an organic substance, a substance must contain Healing of wounds - ANSWER-Regeneration in man is limited to n...