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