Noble gases Study guides, Revision notes & Summaries

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) - 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. a nucl...

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) - 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. a nucl...

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

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...

PHSC 1033 Final Exam BRCC Questions and Answers All Correct Which of the following Group 1A elements has the largest atom? Li Rb Na K - Answer-Rb What is the preferred name for Mg3N2? - Answer-Magnesium nitride Which group is the nearest neighbor to the noble gases in the periodic table? - Answer-Halogens Which of the following is a symbol for an alkaline earth metal? Li Na Au Mg - Answer-Mg Which science deals with the composition, structure, properties, and reaction...

Select one: a. Linear b. Trigonal Planar c. Bent d. Trigonal Pyramidal The three-dimensional manner in which the atoms of a molecule project into space is important because it affects which of the following Select one: a. Physical properties b. Solubility c. Melting point d. All of the above What is the predicted bond angle for a molecule with a trigonal bipyramidal geometry? Select one: a. 90 b. 120 c. 180 d. Only A and B are correct Which elements have a complete outer electr...

The 5 chemical properties of matter - Answer-reactivity, combustibility, valence, combining requirements, stability The atomic mass is equal to the sum of the... - Answer-protons and neutrons Hydrogen has no... - Answer-neutrons The outer orbit (last shell) requires how many valence electrons? - Answer-8 The 1st shell must have how many electrons to be complete? - Answer-2 Positively charged ions - Answer-cations Negatively charged ions - Answer-anions Metals produce what type of ions? -...

ASVAB, Real asvab test!!! Over 290 Questions And Correct answers 2024 Proteins necessary for body's maintenance, growth, and repair (GS) Carbohydrates and Fats used primarily for energy (GS) 212 Water boils at ____ degrees fahrenheit (GS) 100 Water boils at ____ degrees Celsius (GS) 373 Water boils at ____ Ks on the Kelvin scale (GS) Veins carry blood from capillaries toward the heart. (GS) Arteries carry blood away from the heart. (GS) Ventricles lower chamber of the heart (G...

Proteins - necessary for body's maintenance, growth, and repair (GS) Carbohydrates and Fats - used primarily for energy (GS) 212 - Water boils at ____ degrees fahrenheit (GS) 100 - Water boils at ____ degrees Celsius (GS) 373 - Water boils at ____ Ks on the Kelvin scale (GS) Veins - carry blood from capillaries toward the heart. (GS) Arteries - carry blood away from the heart. (GS) Ventricles - lower chamber of the heart (GS) Red Blood Cells - component of blood which ca...

ASVAB, REAL ASVAB TEST!!! (300 Questions) with Correct Answers 100% necessary for body's maintenance, growth, and repair (GS) [Ans:- Proteins used primarily for energy (GS) [Ans:- Carbohydrates and Fats Water boils at ____ degrees fahrenheit (GS) [Ans:- 212 Water boils at ____ degrees Celsius (GS) [Ans:- 100 Water boils at ____ Ks on the Kelvin scale (GS) [Ans:- 373 carry blood from capillaries toward the heart. (GS) [Ans:- Veins carry blood away from the heart. (GS) [Ans:-...