Answer the following question given this paragraph: Minerals form from dissolved substances when water evaporates. Q: What process does water undergo to leave behind dissolved substances? Choices: - accumulation - oxidation - ascension - evaporation A:
evaporation
(Question)
Answer the following question given this paragraph: In alpha decay, energy and an alpha particle are emitted by a nucleus that is unstable because it has too many protons. An alpha particle consists of two protons and two neutrons, so it is actually a helium nucleus. Q: What is an alpha particle with two protons and two neutrons called? Choices: - chloride nucleus - hydrogen nucleus - hydrogen nucleus - helium nucleus A:
(Answer)
helium nucleus
Ques: Answer the following question given this paragraph: Printers like the one that made the plastic bicycle are a new type of technology. Technology is the application of science to solve problems. Because technology finds solutions to practical problems, new technologies may have major impacts on society, science, and industry. For example, some people predict that 3-D printing will revolutionize manufacturing. Q: What is the term for the application of science to solve problems? Choices: - mathematics - research - ingenuity - technology A:
Ans: technology
(Q).
Answer the following question given this paragraph: Discussion As might have been expected, the player slides a shorter distance by sliding uphill. Note that the problem could also have been solved in terms of the forces directly and the work energy theorem, instead of using the potential energy. This method would have required combining the normal force and force of gravity vectors, which no longer cancel each other because they point in different directions, and friction, to find the net force. You could then use the net force and the net work to find the distance d that reduces the kinetic energy to zero. By applying conservation of energy and using the potential energy instead, we need only consider the gravitational potential energy. Q: What force increases a slide downhill and decreases a slide uphill? Choices: - nuclear - frictional - tension - gravity A:
(A).
gravity
Ques:Answer the following question given this paragraph: Following hydrogen is the noble gas helium, which has an atomic number of 2. The helium atom contains two protons and two electrons. The first electron has the same four quantum numbers as the hydrogen atom electron (n = 1, l = 0, ml = 0, m s = + 1 ). The second electron also goes into the 1s orbital and fills that orbital. The second electron 2 has the same n, l, and ml quantum numbers, but must have the opposite spin quantum number, m s = 1 . This is in 2 accord with the Pauli exclusion principle: No two electrons in the same atom can have the same set of four quantum numbers. For orbital diagrams, this means two arrows go in each box (representing two electrons in each orbital). Q: What noble gas follows hydrogen on the periodic table? Choices: - nitrogen - oxygen - halogen - helium A:

Ans:helium
Answer the following question given this paragraph: and procaine. Not only do catalysts greatly increase the rates of reactions, but in some cases such as in petroleum refining, they also control which products are formed. The acceleration of a reaction by a catalyst is called catalysis. Q: Catalysts can greatly increase the rates of chemical what? Choices: - photosynthesis - decay - effects - reactions A:
reactions