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