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