A) particles in solids do not move B) particles in gases vibrate in place C) particles in liquids are still D) particles of matter are in constant motion
A) condensation B) vaporization C) sublimation D) evaporation
A) sugar B) salt C) Kool-Aid D) sand
A) paper ripping B) aluminum foil folding C) metal rusting D) ice melting
A) solid B) plasma C) liquid D) gas
A) plastic burning B) apple rotting 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) F C) S D) O
A) bouyancy B) density C) mass D) weight
A) a base B) positively charged C) an acid D) negatively charged
A) plasma B) solid C) liquid D) gas
A) N3 B) O2 C) NaOH D) H2
A) stirring the tea B) heating the tea C) adding more ice D) using powdered sugar instead of sugar cubes
A) Rhenium B) Bohrium C) Arsenic D) Bromine
A) Dalton, Thomson, Rutherford, Bohr B) Bohr, Dalton, Rutherford, Thomson C) Dalton, Rutherford, Thomson, Bohr D) Dalton, Thomson, Bohr, Rutherford
A) Chlorine has 7 valence electrons, and has 35 protons in its nucleus, and is in period 3. 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 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) Tc & Ru B) Sb & Te C) I & At D) Na & Mg
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) element B) chemical change C) mixture D) compound
A) vaporization B) evaporation C) sublimation D) condensation
A) atomic number B) atomic mass C) atomic weight D) mass number
A) He proposed that an atom is a positively charged sphere with electrons embedded in it. 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 was the first to suggest that different elements have atoms of different masses.
A) Yes B) No
A) Ernest Rutherford B) J.J. Thomson C) Niels Bohr D) John Dalton
A) molecule B) electron cloud C) plum pudding model D) nucleus
A) independent variable B) dependent variable C) control D) constant |