Before DNA was discovered, in which materials did scientists think the genetic material was stored?

proteins

carbohydrates

nucleic acids

lipids

In the mechanism of nucleophilic substitution (SN1 or Sn2), an existing bond breaks and a new bond forms.

Why doors and windows are harder to close in the summer then in winter

Solid mixture chemistry two or more metals is called

A student made the Lewis dot diagram of a compound as shown. Mg is written with two dots shown on its top. Cl is written on the right side of Mg. Cl has seven dots around it. An arrow is shown from one dot on Mg toward the vacant space around Cl.

A temperature scale used by scientist

Using complete sentences, explain how large-scale agriculture leads to increased atmospheric CO2?

What is the trend in effective nuclear charge for elements on the periodic table? It decreases across a period but is constant down a group. It increases across a period but is constant down a group.

Which of the following is a benefit of having a standard measurement system that can be used by scientists worldwide

Salt mixed in water is an example of a___ a. solution b. heterogeneous mixture c. colloid d. suspension e. pure substance

How are intermolecular forces different from the forces that bond atoms together into molecules? How are they similar?