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