Why did becquerel expose uranium crystals to sunlight in his initial experiment?
he wanted to show that warmed crystals radiate heat.
he wanted to show that the crystals emit x-rays.
he wanted to show that the crystals emit light after absorbing light.
he wanted to show that the crystals would become radioactive when they were exposed to sunlight.

What is the strongest intermolecular force between an nacl unit and an h2o molecule together in a solution? covalent bonding dipole-dipole force hydrogen bonding ion-dipole force

What type of reaction is shown below? check all that apply. 2h2o2 → 2h2o + o2 synthesis decomposition combustion

How does a catalyst increase the speed of a reaction? a. the catalyst eliminates the activated complex stage, allowing products to form immediately. b. the catalyst lowers the energy level of the reactants, making it easier for them to react. c. the catalyst makes it easier for the activated complex to form, lowering the activation energy. d. the catalyst raises the energy level of the products, making the reaction finish sooner. reset next