For each of the following pairs of elements predict whether they will form a bond that is primarily ironic or one that is primarily covalent. Explain your answers. Lithium and Oxygen
Chlorine and Fluorine
Calcium and Sulfur​

What produces a record of seismic waves? richter scale seismogram barometer seismograph

•• al and bert are jogging side-by-side on a trail in the woods at a speed of 0.75 m/s. suddenly al sees the end of the trail 35 m ahead and decides to speed up to reach it. he accelerates at a constant rate of 0.50 m/s2, while bert continues on at a constant speed. (a) how long does it take al to reach the end of the trail? (b) once he reaches the end of the trail, he immediately turns around and heads back along the trail with a constant speed of 0.85 m/s. how long does it take him to meet up with bert? (c) how far are they from the end of the trail when they meet?

Drag each item into the proper state of matter category.