Which are the best conditions needed for making good fossils? Choose the 2 best answers.

Question 6 options:

Exposed to weather for a long period of time before being covered

Covered quickly

Have soft body parts

Have hard body parts

Describe what the heating curve of ethanol shows about the rate of temperature increase and the enthalpy of vaporization. A) The temperature increase converts bonding forces into intermolecular forces.

Which reaction is a single replacement reaction? a. 2H2 + O2 - > 2H2O b. 2H2O2 - > 2H2O + O2 c. KOH + HCI - > KCI + H2O d. Cu + 2AgNO3 - > 2Ag + Cu (NO3) 2 i'll mark brainliest!

For the following SN2 reaction, draw the major organic product and select the correct (R) or (S) designation around the stereocenter carbon in the organic substrate and organic product. Include wedge/dash bonds and H on a stereocenter.

The hardest subtance on the Mohs scale is?

Based on Reference Table I, which change occurs when pellets of solid NaOH are added to water and stirred? (1) The water temperature increases as chemical energy is converted to heat energy.

Watch the animation, then check off the samples that will conduct electricity. Check all that apply. View Available Hint (s) Check all that apply. NaCl solution Solid NaCl Solid sugar Sugar solution

Burning wood represents a chemical change. True or False?

Why are phosphates in laundry detergent

What is the name of the scientist who discovered the electron

Which of these is not a covalent molecule? 1. F2 2. CO 3. LiF 4. NH3