A) particles in solids do not move B) particles in liquids are still C) particles in gases vibrate in place D) particles of matter are in constant motion
A) sublimation B) vaporization C) evaporation D) condensation
A) sugar B) sand C) salt D) Kool-Aid
A) ice melting B) aluminum foil folding C) metal rusting D) paper ripping
A) plasma B) liquid C) gas D) solid
A) apple rotting B) water evaporating into water vapor C) reaction between baking soda and vinegar D) plastic burning
A) It is possible for carbon atoms to have either 6 or 7 protons in its nucleus B) All helium atoms have 4 protons in its nucleus C) All carbon atoms have exactly 6 protons in its nucleus D) All lithium atoms have 3 neutrons in its nucleus
A) Ne B) S C) F D) O
A) mass B) density C) bouyancy D) weight
A) negatively charged B) an acid C) a base D) positively charged
A) solid B) plasma C) liquid D) gas
A) NaOH B) N3 C) H2 D) O2
A) using powdered sugar instead of sugar cubes B) stirring the tea C) adding more ice D) heating the tea
A) Bohrium B) Bromine C) Arsenic D) Rhenium
A) Dalton, Rutherford, Thomson, Bohr B) Dalton, Thomson, Rutherford, Bohr C) Bohr, Dalton, Rutherford, Thomson D) Dalton, Thomson, Bohr, Rutherford
A) Chlorine is in group 17, and has 2 energy levels, and is in the Halogen family. B) The atomic number is 17, the atomic mass (weight) is 35.453, and it (Chlorine) is in the same family as Fluorine. C) Chlorine has 7 valence electrons, and has 35 protons in its nucleus, and is in period 3. D) Chlorine is in the same family as sulfur, has 18 neutrons in its nucleus and is a nonmetal gas.
A) Tc & Ru B) Na & Mg C) I & At D) Sb & Te
A) Solid particles do not move. B) Particles in solids vibrate in place. C) Particles in gases have lots of energy and move freely. D) Particles in liquids flow around each other.
A) chemical change B) mixture C) compound D) element
A) sublimation B) vaporization C) evaporation D) condensation
A) atomic weight B) mass number C) atomic mass D) atomic number
A) He was the first to propose that an atom was mostly empty space. B) He proposed that an atom is a positively charged sphere with electrons embedded in it. C) He was the first to suggest that different elements have atoms of different masses. D) His model showed electrons moving in specific layers, shells, or orbits.
A) Yes B) No
A) John Dalton B) Niels Bohr C) Ernest Rutherford D) J.J. Thomson
A) nucleus B) plum pudding model C) electron cloud D) molecule
A) constant B) independent variable C) dependent variable D) control |