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