Q: Answer the following question given this paragraph: Metals tend to be malleable. This means that they can be formed into thin sheets without breaking. An example is aluminum foil, also pictured in the Figure below . Q: What is an element that tend to be malleable? A:

OPTIONS:
- actinide
- mixture
- lanthanide
- metal

A: metal

input: OPTIONS:
- reaction energy
- decomposition energy
- conductivity energy
- activation energy Now, answer this question: Answer the following question given this paragraph: Catalysts interact with reactants so the reaction can occur by an alternate pathway that has a lower activation energy. Activation energy is the energy needed to start a reaction. When activation energy is lower, more reactant particles have enough energy to react so the reaction goes faster. Many catalysts work like the one in the Figure below . (You can see an animated version at the following URL. ) The catalyst brings the reactants together by temporarily bonding with them. This makes it easier and quicker for the reactants to react together. Notice how the catalyst is released by the product molecule at the end of the reaction. Q: What is the energy needed to start a reaction between catalysts and reactants called? A:
A:
output: activation energy

Answer the following question given this paragraph: Regional metamorphism occurs over a large area when a rock is buried or compressed. Q: What occurs over a large area when a rock is buried or compressed? A:

OPTIONS:
- metamorphic diffusion
- cavern system
- landslide
- regional metamorphism

Answer: regional metamorphism

Problem: OPTIONS:
- used
- new
- old
- free
Q: Answer the following question given this paragraph: 6.2 Potential, Kinetic, Free, and Activation Energy Energy comes in many different forms. Objects in motion do physical work, and kinetic energy is the energy of objects in motion. Objects that are not in motion may have the potential to do work, and thus, have potential energy. Molecules also have potential energy because the breaking of molecular bonds has the potential to release energy. Living cells depend on the harvesting of potential energy from molecular bonds to perform work. Free energy is a measure of energy that is available to do work. The free energy of a system changes during energy transfers such as chemical reactions, and this change is referred to as G. The G of a reaction can be negative or positive, meaning that the reaction releases energy or consumes energy, respectively. A reaction with a negative G that gives off energy is called an exergonic reaction. One with a positive G that requires energy input is called an endergonic reaction. Exergonic reactions are said to be spontaneous, because their products have less energy than their reactants. The products of endergonic reactions have a higher energy state than the reactants, and so these are nonspontaneous reactions. However, all reactions (including spontaneous -G reactions) require an initial input of energy in order to reach the transition state, at which they'll proceed. This initial input of energy is called the activation energy. Q: What kind of energy is specifically defined as the energy that is available to do work? A:
Answer: free

Problem:OPTIONS:
- the Earth's orbit
- the orbit of Mars
- the sun
- its orbit

Answer the following question given this paragraph: Venus rotates slowly in a direction opposite to the direction of its orbit. Q: Venus rotates slowly in a direction opposite to the direction of what? A:
****
A: its orbit

Problem:OPTIONS:
- isotope test
- microwave theory
- radioactive illustrating
- radioactive dating

Answer the following question given this paragraph: Radioactive dating is the use of radioactive decay to estimate the ages of fossils and rocks. An example is carbon-14 dating. Q: What is the term for the use of radioactive decay to estimate the ages of fossils and rock? A:
****
A:
radioactive dating