Classify each of the following as a heterogeneous mixture or a homogeneous mixture:

1) salad

2) tap water

3) muddy water

Define diffusion. Is it faster in summer or winter season?

Groups of the periodic table correspond to elements with: A. The same color B. The same atomic number C. Similar properties D. Similar numbers of neutrons

A molecule made of a nitrogen base, sugar, and a phosphate

How are hormones transported in the blood?

The vapor pressure of benzene is 100.0 mmhg at 26.1°c. calculate the vapor pressure of a solution containing 28.2 g of camphor (c10h16o) dissolved in 94.8 g of benzene. (camphor is a low-volatility solid.

How many moles of a gas will occupy 2.50L at STP

Which has more kinetic energy, a small sports car traveling at 30 km/hr or a large tractor-trailer traveling at 75 km/hr?

A Lay's potato chip weighing 4.03g is put into a bomb calorimeter containing 895.5g of water at 25.10°C. If this increases the temperature of the surrounding water to 48.89°C, what is the amount of calories per serving if 1 serving = 28.38g.

Which element is the least metallic between cadmium, silver, zinc, or iron?

Describe the motion of molecules in an ice cube an in a radiator in winter