A car travels 300 km in 6 hours. What is the average speed of the car (in km/hr) ?

How long does it take for coconut oil to solidify in the fridge?

Which compounds are most likely to have covalent bonds? Select all that apply. Hint: Review your periodic table. NaF MgO H2O CO

Grinding wheat in to flour is a a. physical change b. chemical change

Which of the following elements will tend to form an anion? A. Aluminum B. Beryllium C. Copper D. Silicon E. All of the Above

Which one of the following choices is a simple sugar? A. Glucose B. Lactase C. Chocolate D. Orange juice

What happens to the total mass of a substance undergoing a physical change

32 g of sulfur will react with 48 g of oxygen to produce 80 g of sulfur trioxide. if 20 g of sulfur and 100 g of oxygen are placed into a sealed container and allowed to react, what is the mass of sulfur trioxide in the container after the reaction

Water exhibits high levels of cohesion due to the polarity of the molecule (positively and negatively charged sides). given this information, which type of bond is responsible for water's cohesion and which atoms interact to form this bond?

scientist have found many marine fossils on the mountain far from any ocean or sea what is the best explanation for these fossils

The change in energy needed to change the state of a substance is