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