A) particles of matter are in constant motion B) particles in liquids are still C) particles in gases vibrate in place D) particles in solids do not move
A) evaporation B) vaporization C) sublimation D) condensation
A) sugar B) salt C) Kool-Aid D) sand
A) ice melting B) metal rusting C) aluminum foil folding D) paper ripping
A) liquid B) gas C) solid D) plasma
A) plastic burning B) water evaporating into water vapor C) reaction between baking soda and vinegar D) apple rotting
A) All helium atoms have 4 protons in its nucleus B) All carbon atoms have exactly 6 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) S B) F C) Ne D) O
A) weight B) mass C) density D) bouyancy
A) positively charged B) a base C) negatively charged D) an acid
A) solid B) liquid C) plasma D) gas
A) NaOH B) N3 C) H2 D) O2
A) heating the tea B) using powdered sugar instead of sugar cubes C) adding more ice D) stirring the tea
A) Arsenic B) Bohrium C) Bromine D) Rhenium
A) Dalton, Thomson, Bohr, Rutherford B) Dalton, Rutherford, Thomson, Bohr C) Dalton, Thomson, Rutherford, Bohr D) Bohr, Dalton, Rutherford, Thomson
A) Chlorine is in the same family as sulfur, has 18 neutrons in its nucleus and is a nonmetal gas. B) Chlorine is in group 17, and has 2 energy levels, and is in the Halogen family. 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) Sb & Te B) Tc & Ru C) Na & Mg D) I & At
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) compound C) element D) mixture
A) sublimation B) vaporization C) evaporation D) condensation
A) atomic number B) atomic mass C) atomic weight D) mass 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) No B) Yes
A) Niels Bohr B) John Dalton C) Ernest Rutherford D) J.J. Thomson
A) electron cloud B) nucleus C) plum pudding model D) molecule
A) dependent variable B) control C) constant D) independent variable |