A) particles in liquids are still B) particles in solids do not move C) particles of matter are in constant motion D) particles in gases vibrate in place
A) condensation B) vaporization C) evaporation D) sublimation
A) sand B) salt C) sugar D) Kool-Aid
A) aluminum foil folding B) ice melting C) metal rusting D) paper ripping
A) liquid B) gas C) plasma D) solid
A) plastic burning B) reaction between baking soda and vinegar C) apple rotting D) water evaporating into water vapor
A) It is possible for carbon atoms to have either 6 or 7 protons in its nucleus B) All helium atoms have 4 protons in its nucleus C) All carbon atoms have exactly 6 protons in its nucleus D) All lithium atoms have 3 neutrons in its nucleus
A) Ne B) O C) F D) S
A) mass B) density C) weight D) bouyancy
A) positively charged B) an acid C) negatively charged D) a base
A) gas B) solid C) plasma D) liquid
A) NaOH B) H2 C) N3 D) O2
A) adding more ice B) using powdered sugar instead of sugar cubes C) heating the tea D) stirring the tea
A) Bohrium B) Bromine C) Arsenic D) Rhenium
A) Dalton, Thomson, Bohr, Rutherford B) Dalton, Thomson, Rutherford, Bohr C) Bohr, Dalton, Rutherford, Thomson D) Dalton, Rutherford, Thomson, Bohr
A) Chlorine is in group 17, and has 2 energy levels, and is in the Halogen family. B) The atomic number is 17, the atomic mass (weight) is 35.453, and it (Chlorine) is in the same family as Fluorine. C) Chlorine is in the same family as sulfur, has 18 neutrons in its nucleus and is a nonmetal gas. D) Chlorine has 7 valence electrons, and has 35 protons in its nucleus, and is in period 3.
A) Sb & Te B) I & At C) Tc & Ru D) Na & Mg
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) chemical change B) element C) mixture D) compound
A) evaporation B) vaporization C) condensation D) sublimation
A) atomic mass B) atomic number C) atomic weight D) mass 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) Niels Bohr B) John Dalton C) Ernest Rutherford D) J.J. Thomson
A) nucleus B) molecule C) electron cloud D) plum pudding model
A) dependent variable B) constant C) control D) independent variable |