Most of the mass of an element is found in the?

1 - proton

2 - electron

3 - neutron

4 - nucleus

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When an object's volume is made smaller and its mass remains the same, its density: increases. decreases. remains the same. increases then decreases.

Does the chemical symbol of the element beryllium correspond to the name of the element?

How are evaporation and sublimation similar? A Both involve the formation of a gas. B Both release energy to the surroundings. C Both take place throughout a solid. D Both take place at the surface of a liquid.

If we have 22 molecules of sodium sulfate in water, how many sodium ions will be observed in solution?

Who revised the periodic table

How many particles are in 1 mole of a substance?

Initially you dissolved all, or most, of the p-aminobenzoic acid in ethanol. then you slowly added sulfuric acid. as you did this, a large amount of white solid formed. during the course of the reaction, that white solid dissolved.

How do you know if a chemical reaction has occurred?

Why must a container or system be closed for equilibrium to be established?

What is the bond angle between the hydrogen atoms in an ammonia (NH₃) molecule?