Examlex
How many electrons are in the Lewis dot structure of O and S?
Traces of Life
Evidence or indicators of past or present living organisms, which can include fossils, biological markers, or microbial patterns.
Hadrosaur
A type of duck-billed dinosaur that lived during the Late Cretaceous period, known for its flat beak and often elaborate head crests.
Crest
A prominent feature or projection on an animal's body, such as the plumage on the head of a bird or a ridge along a dinosaur's skull, often used for display or signaling.
Species Specific Sounds
Unique vocalizations or sound patterns that are characteristic of particular species, often used for communication.
Q12: What do all buffers have in common?<br>A)All
Q43: How many protons are in zinc-65?<br>A)33<br>B)30<br>C)36<br>D)66
Q51: Which of the following is not a
Q64: What is an organic compound?<br>A)A compound composed
Q69: How many isomers can be made from
Q75: How does the compound PbCl<sub>2</sub> behave in
Q86: What is the law of definite proportions?
Q101: What best describes the Cl-Cl bond?<br>A)Nonpolar<br>B)Covalent<br>C)Polar covalent<br>D)Ionic
Q103: Which of the following is an alkane?<br>A)CH<sub>3</sub>CH<sub>2</sub>CHCH<sub>2</sub><br>B)CH<sub>3</sub>CHCHCH<sub>3</sub><br>C)CH<sub>2</sub>CHCH<sub>3</sub><br>D)CH<sub>3</sub>CH<sub>2</sub>CH<sub>2</sub>CH<sub>3</sub>
Q114: What is wrong with the statement, "nonpolar