WGU C371 CONCEPTS OF SCIENCE REAL EXAM NEWEST 2026 ACTUAL EXAM COMPLETE QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS) |100% GUARANTEED PASS!!

WGU C371 CONCEPTS OF SCIENCE REAL EXAM NEWEST 2026 ACTUAL EXAM COMPLETE QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS) |100% GUARANTEED PASS!! A substance has a low density and fills its container. What is the physical state of the substance?- gas A substance has a definite volume and takes the shape of its container. What is the physical state of the substance?- liquid A substance takes the shape of its container and flows easily. It is not easily compressible. What is the physical state of the substance?- liquid Which of the following options best describes this illustration? (Cube of spheres)- solid Which event represents a chemical change?- A shovel rusts Which property is a chemical property?- Flammability Which property is an extensive property of an iron bar?- length What does the law of conservation of matter specify?- Total mass stays the same in changes of state. According to the law of conservation of energy:- Total energy in a closed system is constant. Exactly one pound of bread dough is placed in a baking tin. The dough is cooked in an oven at 350ºF, releasing a wonderful aroma of freshly baked bread during the cooking process. Which of the following options accurately describes the mass of the baked loaf?- The mass of the baked loaf is less than the mass of the one pound of the original dough because a gas is produced during the baking process. The gas escapes the dough and is responsible for the aroma of freshly baked bread. Which of the following options describes a change in potential energy only?- A leopard waits in a tree in order to more easily seek prey. As a dropped ball falls to the ground, what is happening?- It is changing potential energy into kinetic energy. Which situation is most directly associated with kinetic energy?- A bowling ball is rolled down a lane. The metal bleachers at a football stadium heat up in the sun. Which of the following options best describes the type of energy transfer occurring in this situation?- Thermal energy How would you classify ammonia (NH3)?- compound Which of the following is a pure substance?- aluminum sulfate, Al2(SO4)3 How would you classify a solution of potassium iodide, KI, in water?- homogeneous mixture A neutral atom has a mass number of 17 and 8 electrons. Which element is it?- Oxygen An ion of which element could contain 33 protons, 42 neutrons, and 30 electrons?- As3+ A neutral atom has a mass number of 1. Which element is it?- Hydrogen 1/1 What is the mass number for an atom of selenium that has 45 neutrons?- 79 What is the charge of an ion that contains 15 protons and 18 electrons?- 3- 235 (mass #) U (element) 92 (Atomic #) How many electrons are in this isotope?- 92 1 (Proton)/1 H, 2(Proton + 1 Neutron)/1 H, 2(Proton + 2 Neutron)/1 H Which of the following options best describes this illustration?- Isotopes (neutron count changes) Bromine (used to make silver bromide, the important component of photographic film) has two naturally occurring isotopes. One has a mass of 78.918336 amu and a percent abundance of 50.69%, and the other has a mass of 80.916289 amu and a percent abundance of 49.31%. What is the average atomic mass of bromine?- 79.90 amu Gallium has two naturally occurring isotopes, 69Ga and 71Ga, with masses of 68.9257 amu and 70.9249 amu, respectively. The average atomic mass of gallium is 69.723 amu. What is the percent abundances of these isotopes of gallium?- 60.1% 69Ga ; 39.9% 71Ga60.1% 69Ga ; 39.9% 71Ga Thallium has two stable isotopes, 203Tl and 205Tl. The average atomic mass of thallium is 204.38 amu. Which isotope is the more abundant of the two?- 205Tl Which of the following objects is the smallest? Choices: Molecule Electron Cell Atom- Electron