Examlex
The number of carbon-carbon bonds in acetylene, C2H2, is
Preoperational
A stage in Jean Piaget’s theory of cognitive development during which children from about 2 to 7 years old develop memory and imagination, but are not yet able to perform operations (logical reasoning tasks).
Sensorimotor
A developmental stage in early childhood where learning occurs through interacting with the environment using basic motor and sensory skills.
Formal Operational
Formal operational is a stage in Piaget's theory of cognitive development where individuals gain the ability to think abstractly, logically, and systematically, typically developing during adolescence.
Postoperational
A stage in Jean Piaget's theory of cognitive development where children ages 7 to 11 start to use logic and operational thinking but are not yet able to handle abstract reasoning.
Q9: At which of the following Celsius
Q22: Brown dwarfs<br>A)are members of the main sequence.<br>B)are
Q23: The moon has an abundance of<br>A)atmospheric gases.<br>B)water.<br>C)ice.<br>D)craters.
Q24: Reverse osmosis<br>A)is used to replenish the oxygen
Q32: Approximately how many doctoral programs exist for
Q35: Below a thin sedimentary layer, the ocean
Q38: Neutron stars are about<br>A)the size of a
Q44: The number of galaxies in the universe
Q46: The melting point of water is
Q48: An example of a purely longitudinal wave