A lithium atom has an atomic number of 3 and a mass of 7. The number of electrons which it has in the 1st shell (principal energy level) is?

Ernest Rutherford discovered that atoms were mostly: Negatively charged Positively charged Electrons Empty space

In the chemical formula, is the metal or nonmetal symbol written first?

A reaction rate is measure per unit of?

How are new kinds of matter formed in a chemial change?

In a neutralization reaction, an aqueous solution of an Arrhenius acid reacts with an aqueous solution of an Arrhenius base to produce A) an ether and water B) an ether and an alcohol C) a salt and water D) a salt and an alcohol

What mass of H2SO4 is contained in 60.00 mL of a 5.85 M solution of sulfuric acid

One isotope has 6 protons and 8 neutrons which reference names this isotope

When an atom that has no charge loses two electrons, it becomes a: A: positive ion. B: negative ion. C: positive isotope. D: negative isotope.

A 155.0 9 piece of copper at 182 °C Is dropped into 2500 g of water at 23.9 °C. (The specific heat of copper is 0.385 1/9°C.) Calculate the final temperature of the mixture. (Assume no heat loss to the surroundings.)

Which state of matter is characterized by having an indefinite shape, but a definite volume? Gas Liquid Solid None of the above