A) particles of matter are in constant motion B) particles in liquids are still C) particles in gases vibrate in place D) particles in solids do not move
A) sublimation B) evaporation C) vaporization D) condensation
A) Kool-Aid B) sand C) sugar D) salt
A) ice melting B) aluminum foil folding C) paper ripping D) metal rusting
A) plasma B) solid C) liquid D) gas
A) reaction between baking soda and vinegar B) apple rotting C) plastic burning D) water evaporating into water vapor
A) All carbon atoms have exactly 6 protons in its nucleus B) It is possible for carbon atoms to have either 6 or 7 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) F B) S C) Ne D) O
A) weight B) density C) bouyancy D) mass
A) negatively charged B) positively charged C) an acid D) a base
A) plasma B) gas C) liquid D) solid
A) H2 B) O2 C) N3 D) NaOH
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) Bohr, Dalton, Rutherford, Thomson B) Dalton, Thomson, Rutherford, Bohr C) Dalton, Thomson, Bohr, Rutherford 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) 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 the same family as sulfur, has 18 neutrons in its nucleus and is a nonmetal gas.
A) I & At B) Sb & Te C) Tc & Ru D) Na & Mg
A) Particles in liquids flow around each other. B) Solid particles do not move. C) Particles in solids vibrate in place. D) Particles in gases have lots of energy and move freely.
A) element B) mixture C) compound D) chemical change
A) sublimation B) condensation C) evaporation D) vaporization
A) mass number B) atomic number C) atomic mass D) atomic weight
A) He was the first to propose that an atom was mostly empty space. B) He proposed that an atom is a positively charged sphere with electrons embedded in it. 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) John Dalton D) Niels Bohr
A) molecule B) plum pudding model C) electron cloud D) nucleus
A) constant B) control C) dependent variable D) independent variable |