Salad (lettuce, tomato, and onion) a pure substance or a mixture?

What are the simplest ions of hydrogen? Show their reaction with water.

10. Due to the soil type, tree roots in the rain forest must be deep taproots waterproof shallow

Which list of elements contains two metalloids? (1) Si, Ge, Po, Pb (3) Si, P, S, Cl (2) As, Bi, Br, Kr (4) Po, Sb, I, Xe

Classify each type of matter as an element, a compound, a heterogeneous mixture, or a homogeneous mixture. drag each item to the appropriate bin. sugar air hot tea salt water

3.4000*10^-6 + 5.7000*10^-3

The closeness of a measurement to its actual value is a measure of its A. usefulness. B. reproducibility. C. precision. D. accuracy.

At 300 k the pressure inside a gas filled container is 500 kPa if the pressure inside decreses to 100kpa but the volume remains the same what is the final temperature of the gas

The SI unit for current is: joules volts ohms amps

In chemical reactions, there is a conservation of what?

If the temperature of water increases as you heat it, the temperature is the independent variable. True False