Answer the following question given this paragraph: Cleavage is the tendency of a mineral to break along certain planes. When a mineral breaks along a plane, it makes a smooth surface. Minerals with different crystal structures will break or cleave in different ways ( Figure below ). Halite tends to form cubes with smooth surfaces. Mica tends to form sheets. Fluorite can form octahedrons. Q: What term is used to describe the tendency of a mineral to break along certain planes? Choices: - tooth decay - porosis - erosion - cleavage A:
cleavage

Answer the following question given this paragraph: The head generally has several simple eyes and a pair of compound eyes. Simple eyes have a single lens, like the human eye. Compound eyes have many lenses. Q: Simple eyes, like the human eye, have how many lenses? Choices: - two - none - four - one A:
one

Answer the following question given this paragraph: To determine the overall voltage of a particular voltaic cell, simply combine the voltages of the oxidation and reduction half reactions. Even if you need to take a multiple of a half reaction for the electrons to cancel, do not take the multiple of the E1/2. Use the values directly as is from - ball-ch14_s03_t01. Spontaneous redox reactions have positive overall voltages. If the voltage of the reaction as written is negative, it is not spontaneous in that direction. Rather, the reverse reaction is the spontaneous redox reaction. Q: Combining the voltages of the oxidation and reduction half reactions helps to determine what? Choices: - slimy - moisture - magnetic - voltage A:
voltage

Answer the following question given this paragraph: As food is pushed through the GI tract by peristalsis, it undergoes digestion. Digestion is the process of breaking down food into nutrients. There are two types of digestion: mechanical digestion and chemical digestion. Q: The process of breaking down food into nutrients is known as __________ Choices: - energy - absorption - filtration - digestion A:
digestion