Which unit can be used to express the concentration of a solution?

(1) L/s (3) ppm

(2) J/g (4) kPa

What is always true of an object with a lot of mass? A) It contains a lot of matter incorrect answer B) It has a large volume incorrect answer C) It has a high-density incorrect answer D) It cannot be accurately measured

For an ideal gas in a confined area, when the volume is decreased and the temperature is increased at the exact same time, the ... a. average kinetic energy is decreased b. number of collisions is decreased c. pressure stays constant d.

Why is it important to have the International System of Units?

During an experiment, Jon exhales through a straw and blows bubbles into a solution. Which observation would most likely indicate that a chemical reaction is occurring? The bubbles disappear into the solution before reaching the surface.

Audrey pours hot chocolate into a cup. How is heat energy transferred? A) Heat from the hot chocolate moves to the cup. B) Cold from the cup moves to the hot chocolate. C) Heat energy does not move because the heat is in a liquid.

How is the mole similar to a dozen?

What element with the highest electronegativity value? Cesium calcium helium fluorine

How many neutrons and electrons are in Oxygen⁻¹⁷ isotope?

What is science all about?

What type of change is a substance that changes form but remains the same?