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