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) sublimation B) vaporization C) evaporation D) condensation
A) sand B) Kool-Aid C) sugar D) salt
A) paper ripping B) aluminum foil folding C) ice melting D) metal rusting
A) solid B) plasma C) liquid D) gas
A) apple rotting B) plastic burning C) water evaporating into water vapor D) reaction between baking soda and vinegar
A) All helium atoms have 4 protons in its nucleus B) All carbon atoms have exactly 6 protons in its nucleus C) It is possible for carbon atoms to have either 6 or 7 protons in its nucleus D) All lithium atoms have 3 neutrons in its nucleus
A) Ne B) O C) F D) S
A) bouyancy B) weight C) mass D) density
A) a base B) an acid C) positively charged D) negatively charged
A) gas B) plasma C) liquid D) solid
A) NaOH B) O2 C) H2 D) N3
A) adding more ice B) using powdered sugar instead of sugar cubes C) stirring the tea D) heating the tea
A) Bromine B) Rhenium C) Bohrium D) Arsenic
A) Dalton, Thomson, Rutherford, Bohr B) Dalton, Thomson, Bohr, Rutherford C) Bohr, Dalton, Rutherford, Thomson D) Dalton, Rutherford, Thomson, Bohr
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) Chlorine has 7 valence electrons, and has 35 protons in its nucleus, and is in period 3. D) The atomic number is 17, the atomic mass (weight) is 35.453, and it (Chlorine) is in the same family as Fluorine.
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) mixture B) compound C) element D) chemical change
A) evaporation B) condensation C) sublimation D) vaporization
A) atomic weight B) mass number C) atomic number D) atomic mass
A) He was the first to suggest that different elements have atoms of different masses. B) He was the first to propose that an atom was mostly empty space. C) His model showed electrons moving in specific layers, shells, or orbits. D) He proposed that an atom is a positively charged sphere with electrons embedded in it.
A) No B) Yes
A) Niels Bohr B) Ernest Rutherford C) J.J. Thomson D) John Dalton
A) molecule B) electron cloud C) plum pudding model D) nucleus
A) independent variable B) dependent variable C) constant D) control |