Which chemical change causes a cake to rise?

formation of a precipitate

production of a gas

change in state

change in color

If atoms energy during a change of state, they are pulled together by attractive forces and become more organized.

How can you drop two eggs the fewest amount of times, without them breaking?

Calculate the ph of a 0.021 m nacn solution. [ka (hcn) = 4.9  10-10]

Consider the oxidation of sodium metal to sodium oxide described by the balanced equation: 4 Na (s) + O2 (g) → 2 Na2O (s) As you can see there are letters in parentheses after each substance.

c. Lead crystallizes in a face-centered cubic structure with a density of 11.34 g/cm3. Polonium crystallizes in a simple cubic structure with a density of 9.3 g/cm3.

What type of mixture is 100 ml of water with a little bit of salt?

Which statement explains why meiosis haploid cells rather than diploid cells

Which factors can affect the amount of coco mix that can be dissolved in water? Check all that apply

If 25% of a radioactive element remains after 1,000 years, what is the half-life?

How many valence electrons do the alkaline-earth elements have? a. 1 b. 2 c. 7 d. 8