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