An object has a mass of 26.94 grams and a volume of 2.568 cubic centimeters. What material is it likely to be made of?
Substance iron gold silver copper
Density (g/cm) 7.874 19.32 10.49 8.92
a. Silver
c. Iron
b. Gold
d. Copper

The mass of a neutron is equal to the mass of a proton plus the mass of an electron. true or false false true

Which theory was contradicted by experiments with the photoelectric effect? light spreads out after it passes through a small opening. as soon as light strikes metal, electrons will be ejected. visible light, regardless of color, will cause the ejection of electrons when striking metal. the kinetic energy of ejected electrons depends on the frequency of light that strikes the metal.

Where are the noble gases located in the periodic table? a. in the center b. on the left side c. in the upper right corner d. on the far right side