Sand is less dense than gravel and will therefore sink to the bottom of the container while the gravel stays ontop.
Answer:
The Standard Model of particle physics is the theory describing three of the four known fundamental forces (the electromagnetic, weak, and strong interactions, and not including the gravitational force) in the universe, as well as classifying all known elementary particles. It was developed in stages throughout the latter half of the 20th century, through the work of many scientists around the world, with the current formulation being finalized in the mid-1970s upon experimental confirmation of the existence of quarks.
Answer: Mg and O
Explanation: just took the test. Trust
Answer:
Explanation:
The Lewis structure of AlF₄⁻ has 32 valence electrons.