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