A) particles in solids do not move B) particles in liquids are still C) particles in gases vibrate in place D) particles of matter are in constant motion
A) condensation B) vaporization C) evaporation D) sublimation
A) sugar B) Kool-Aid C) salt D) sand
A) paper ripping B) aluminum foil folding C) ice melting D) metal rusting
A) gas B) plasma C) solid D) liquid
A) plastic burning B) reaction between baking soda and vinegar C) water evaporating into water vapor D) apple rotting
A) It is possible for carbon atoms to have either 6 or 7 protons in its nucleus B) All carbon atoms have exactly 6 protons in its nucleus C) All helium atoms have 4 protons in its nucleus D) All lithium atoms have 3 neutrons in its nucleus
A) O B) F C) S D) Ne
A) weight B) mass C) bouyancy D) density
A) a base B) an acid C) negatively charged D) positively charged
A) plasma B) solid C) gas D) liquid
A) N3 B) H2 C) NaOH D) O2
A) using powdered sugar instead of sugar cubes B) heating the tea C) stirring the tea D) adding more ice
A) Bromine B) Arsenic C) Bohrium D) Rhenium
A) Dalton, Thomson, Rutherford, Bohr B) Dalton, Rutherford, Thomson, Bohr C) Dalton, Thomson, Bohr, Rutherford D) Bohr, Dalton, Rutherford, Thomson
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 the same family as sulfur, has 18 neutrons in its nucleus and is a nonmetal gas. D) Chlorine is in group 17, and has 2 energy levels, and is in the Halogen family.
A) Sb & Te B) Tc & Ru C) Na & Mg D) I & At
A) Particles in solids vibrate in place. B) Particles in liquids flow around each other. C) Solid particles do not move. D) Particles in gases have lots of energy and move freely.
A) element B) compound C) chemical change D) mixture
A) condensation B) sublimation C) vaporization D) evaporation
A) mass number B) atomic mass C) atomic number D) atomic weight
A) He was the first to suggest that different elements have atoms of different masses. B) His model showed electrons moving in specific layers, shells, or orbits. C) He proposed that an atom is a positively charged sphere with electrons embedded in it. D) He was the first to propose that an atom was mostly empty space.
A) No B) Yes
A) J.J. Thomson B) Ernest Rutherford C) John Dalton D) Niels Bohr
A) plum pudding model B) electron cloud C) nucleus D) molecule
A) dependent variable B) control C) constant D) independent variable |