A) particles in liquids are still B) particles in gases vibrate in place C) particles in solids do not move D) particles of matter are in constant motion
A) evaporation B) condensation C) sublimation D) vaporization
A) Kool-Aid B) sand C) salt D) sugar
A) metal rusting B) ice melting C) aluminum foil folding D) paper ripping
A) gas B) liquid C) plasma D) solid
A) water evaporating into water vapor B) plastic burning C) reaction between baking soda and vinegar D) apple rotting
A) All helium atoms have 4 protons in its nucleus B) All lithium atoms have 3 neutrons in its nucleus C) It is possible for carbon atoms to have either 6 or 7 protons in its nucleus D) All carbon atoms have exactly 6 protons in its nucleus
A) F B) Ne C) O D) S
A) density B) bouyancy C) mass D) weight
A) a base B) negatively charged C) positively charged D) an acid
A) solid B) liquid C) gas D) plasma
A) N3 B) NaOH C) O2 D) H2
A) heating the tea B) stirring the tea C) adding more ice D) using powdered sugar instead of sugar cubes
A) Bromine B) Bohrium C) Arsenic D) Rhenium
A) Bohr, Dalton, Rutherford, Thomson B) Dalton, Thomson, Bohr, Rutherford C) Dalton, Thomson, Rutherford, Bohr D) Dalton, Rutherford, Thomson, Bohr
A) Chlorine has 7 valence electrons, and has 35 protons in its nucleus, and is in period 3. B) Chlorine is in group 17, and has 2 energy levels, and is in the Halogen family. C) Chlorine is in the same family as sulfur, has 18 neutrons in its nucleus and is a nonmetal gas. D) The atomic number is 17, the atomic mass (weight) is 35.453, and it (Chlorine) is in the same family as Fluorine.
A) Tc & Ru B) Sb & Te C) I & At D) Na & Mg
A) Particles in liquids flow around each other. B) Solid particles do not move. C) Particles in gases have lots of energy and move freely. D) Particles in solids vibrate in place.
A) mixture B) compound C) element D) chemical change
A) sublimation B) condensation C) evaporation D) vaporization
A) mass number B) atomic weight C) atomic number D) atomic mass
A) His model showed electrons moving in specific layers, shells, or orbits. B) He was the first to propose that an atom was mostly empty space. C) He proposed that an atom is a positively charged sphere with electrons embedded in it. D) He was the first to suggest that different elements have atoms of different masses.
A) Yes B) No
A) Niels Bohr B) John Dalton C) Ernest Rutherford D) J.J. Thomson
A) plum pudding model B) nucleus C) molecule D) electron cloud
A) constant B) control C) dependent variable D) independent variable |