What do dust, smoke, salt, and chemicals have in common? A. They are gases in air. B. They make up water vapor in air. C. They are particles in air. D. They are found only in pure air.

Which surface ocean current has the warmest water. A. Peru Current B. North Atlantic Drift C. Brazil Current D. Canary Current

Three most common alkali metals include:

What is the reducing agent in the following reaction: 2Mg + O2 → 2MgO? O Mg Mg and O Neither element

four students measured the mass of a piece of metal whose accurate mass is 34.75g. their result are 34.2g, 33.75g, 35.0g and 34.69g. what is the best estimate for the mass of the piece of metal? and why?

A scientist is measuring the pressure that is exerted by each of the following gases in the atmosphere: carbon dioxide, oxygen, and nitrogen. Which term most likely describes what she is measuring?

Since particles in a solid are arranged close together in a regular pattern, some can be classified as i think magma not 100% sure A. gradients. B. crystals. C. plasma. D. magma.

Two examples of common items that use chemical change

Give two sources of energy that can cause ocean waves

Chromium, calcium, and potassium are near each other on the periodic table and have some common characteristics but differ in chemical reactivity.

Which is true of transition metals when moving from left to right on the periodic table? The d sublevels are not filled across the period. The cation radii become larger across the period. Atomic radii increase slightly and then start to decrease.