In a combustion reaction, carbon is used to make reactants burn.

T or F

Write the chemical formulas for the ionic compound vanadium (v) oxide

True or false science is the study of the natural world.

Methyl alcohol is commonly called: CH3OH C2H5OH C3H7OH C4H19OH

5. A fire is started in a fireplace by striking a match and lighting crumpled paper under some logs. Explain all the energy transfers in this scenario using the terms exothermic, endothermic, system, surroundings, potential energy, and kinetic

The scientist finds fossilized remains of other species in the same rock layer as the trilobite. What can the scientist conclude about these other fossils?

How many electrons, protons, neutrons are contained in each atom? A) gallium-69 B) fluorine-23 C) titanium-48 D) tantalum-181

What structure is made from synthetic oil?

Is [h3o + ] = 1.0 * 10-7 m true of acidic, basic, or neutral solutions at 25◦c?

1. Identify whether each of the elements is a metal, non-metal, or metalloid: Ruthenium: Neon: Germanium: Neptunium: Iodine: Strontium: Cesium: Europium:

How do you know which planet is farther away from the sun by years? planet w = 1.9 yrs OR planet x = 11.8 yrs