Chemistry

Describe what a molecule is in your own words. _ _ 2. Give an example of a molecule and explain what atoms it is made from. _ _ 3. Explain why water is considered a molecule and not just an atom.

Compared to the entire stom, the nucieus of the stom is a, smaller and contains most of the atom's mase b. smaller and contains little of the atom's mas e. larger and contains most of the atom's mass d. larger and contains little of the atom's mass 6 6

DMAC Sail aily elome x < What is the chemic X Sgrade-S/classify-elementary-substances-and-compounds-using-models Questions anuvened L& Canify clanentary sutisitances and compoursts vsing modioe '' 5 clapsed 1 Look at the models of molecules below. Select the two compounds Time 0 00 F Challenge Stage 2 of 2 Get 3 cted C CI Cl CI CI CI trichlorofluoromethane c...

Law of Conservation of Matter states that matter can not be created or destroyed matter does not change matter can be destroyed

ange the ionic compounds NaF, Csl, CạO in order of increasing lattice energy, then check using Tal 15. PE 18.1 Predict which one of the following orderings of lattice energy is correct for these ionic compounds a NaCl>MgO>CsI>ScN b ScN>MgO>NaCl>CsI c NaCl>CsI>ScN>CaO d MgO>NaCl>ScN>CsI e ScN>CsI>NaCl>MgO 6. PE 28.1 Which substance would you expect to have th...

Which is a part of Dalton's atomic theory? SELECT ALL THAT APPLY a All substances are made of atoms, which are the smallest particles of matter. b Atoms cannot be divided into smaller particles, created, or destroyed. All atoms of the same element are alike and C have the same mass, but atoms of different elements are different and have different masses. Ato...

Select all steps below that you followed to practice laboratory safety during the experiment. used ongs or a test tube holder to hold materials over the Bunsen burner flame wore gloves and goggles made careful observations of the products and reactants did not smell the gases produced

Terry heats two different masses of substance A to different temperatures, and measures the amounts of both carbon dioxide and water produced. Which statement is true about this experiment? This experiment is well controlled because the masses of substance A and the products are varied. This experiment is uncontrolled because two gaseous products are measure...

In the space below, draw a picture of each person's model of the atom. Dalton Thomson Rutherford Bohr 14. For each part of the atom, identify the scientist associated with its discovery. a. Electrons b. Nucleus c. Neutrons 15. In the space below draw a timeline placing the major advances you have learned about in chronological order. You should include D...

At STP, 44.8 liters of CO_2 contains the same number of molecules as A. 1.0 mole He B. 2.00 moles of a Ne C. 0.500 mole of H_2 D. 4.00 mole of N_2 50. During which two processes does a substance release energy? A. freezing and condensation B. freezing and melting C. evaporation and condensation D. evaporation and melting