A) group to group. B) column to column. C) element to element. D) row to row.
A) dissolving salt in water B) burning wood into charcoal C) cooking an egg D) rusting iron
A) movement of the electrons. B) nuclei of the atoms. C) bonds. D) bonds.
A) one atom of chlorine B) two atoms of oxygen C) one atom of oxygen D) two atoms of chlorine
A) feels slipperychanges the color of an indicator B) usually reacts with a metal C) changes the color of an indicator D) tastes sour
A) the use of knowledge to solve problems. B) new inventions. C) science that uses computers. D) the use of lenses and microscopes.
A) valence electrons B) neutrons C) protons D) protons and neutrons
A) eating or drinking from laboratory glassware. B) touching hot objects with your bare hands. C) tying back long hair and loose clothing. D) testing on odor by directly inhaling the vapor.
A) freezing B) evaporation C) condensation
A) atoms with neutral charges B) ions with opposite charges C) one atom’s nucleus and another atom’s electrons
A) formation of a precipitate B) change in shape C) production of a gas D) change in color
A) was a vibrating string. B) planets orbiting the sun. C) light energy in a vacuum.
A) a solution. B) a colloid. C) a suspension.
A) bonds between atoms break down. B) particles that make up a substance move.
A) alpha decay B) beta decay C) gamma decay
A) the number of protons in the nucleus B) the number of electrons in outermost energy level C) the number of neutrons in the nucleus
A) physical change. B) chemical change
A) 1.23 m. B) 12.3 m. C) 0.123 m.
A) increases B) does not change C) decreases
A) They are extremely nonreactive. B) They are usually gases. C) The are located in the left-most column of the periodic table in group I.
A) melting B) sublimation C) condensation
A) hydrogen. B) gold. C) table salt. D) water.
A) iron ions with a + 2 charge B) iron ions with a + 11 charge
A) on the left-most side B) in the bottom rows C) on the right side
A) solid B) liquid C) gas
A) uniform throughout. ( this means it IS the same) B) not uniform throughout.(this means it IS NOT the same)
A) physical bonds B) chemical bonds C) electric currents
A) boiling B) freezing C) melting
A) water boiling B) water breaking down into hydrogen and oxygen C) ice being carved
A) solid B) liquid C) gas
A) their outermost energy level is full with 4 electrons B) their outermost energy level is full with 8 electrons
A) protons. B) electrons plus the number of neutrons C) protons plus the number of neutrons.
A) scientific method. B) hypothesis C) conclusion
A) ampere. B) mole. C) Kelvin.
A) oxygen (O) and calcium (Ca) B) helium (He) and copper (Cu) C) iron (Fe) and potassium (K)
A) hot water B) cold water C) warm water
A) has mass and takes up space. B) can be weighted. C) can be seen and touched.
A) Never work with chemicals. B) Never do experiments that involve flames or hot objects. C) Always follow your teacher’s instructions and textbook directions exactly.
A) two oxygen atoms. B) two carbon atoms.
A) +1 B) 0 C) -1
A) viscosity. B) energy. C) pressure.
A) is released B) is absorbed C) is created D) is destroyed
A) water B) oxygen C) milk D) carbon dioxide
A) very small amounts of mass. B) tremendous amounts of mass.
A) doing experiments. B) drawing conclusions. C) formulating questions.
A) that can never be changed. B) has been tested by many observations. C) must still be tested by experiments.
A) sharing of electrons between two nonmetals. B) transfer of electrons between metals and nonmetals. C) transfer of neutrons between two metals.
A) drawing conclusions. B) doing experiments. C) designing models.
A) eight protons in its nucleus B) a total of eight neutrons and electrons. C) eight neutrons in its nucleus. |