A) group to group. B) column to column. C) row to row. D) element to element.
A) cooking an egg B) burning wood into charcoal C) dissolving salt in water D) rusting iron
A) bonds. B) nuclei of the atoms. C) movement of the electrons. D) bonds.
A) two atoms of chlorine B) one atom of chlorine C) one atom of oxygen D) two atoms 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) the use of lenses and microscopes. B) science that uses computers. C) the use of knowledge to solve problems. D) new inventions.
A) protons B) neutrons C) valence electrons D) protons and neutrons
A) touching hot objects with your bare hands. B) tying back long hair and loose clothing. C) eating or drinking from laboratory glassware. D) testing on odor by directly inhaling the vapor.
A) condensation B) evaporation C) freezing
A) atoms with neutral charges B) one atom’s nucleus and another atom’s electrons C) ions with opposite charges
A) change in color B) change in shape C) production of a gas D) formation of a precipitate
A) light energy in a vacuum. B) was a vibrating string. C) planets orbiting the sun.
A) a suspension. B) a colloid. C) a solution.
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 electrons in outermost energy level B) the number of protons in the nucleus C) the number of neutrons in the nucleus
A) chemical change B) physical change.
A) 12.3 m. B) 1.23 m. C) 0.123 m.
A) decreases B) does not change 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) sublimation B) melting C) condensation
A) table salt. B) hydrogen. C) gold. 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) gas B) solid C) liquid
A) not uniform throughout.(this means it IS NOT the same) B) uniform throughout. ( this means it IS the same)
A) physical bonds B) electric currents C) chemical bonds
A) freezing B) boiling C) melting
A) water boiling B) ice being carved C) water breaking down into hydrogen and oxygen
A) liquid B) gas C) solid
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) hypothesis B) scientific method. C) conclusion
A) mole. B) ampere. C) Kelvin.
A) iron (Fe) and potassium (K) B) oxygen (O) and calcium (Ca) C) helium (He) and copper (Cu)
A) cold water B) warm 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 work with chemicals. C) Never do experiments that involve flames or hot objects.
A) two oxygen atoms. B) two carbon atoms.
A) +1 B) 0 C) -1
A) pressure. B) viscosity. C) energy.
A) is absorbed B) is destroyed C) is released D) is created
A) milk B) carbon dioxide C) oxygen D) water
A) very small amounts of mass. B) tremendous amounts of mass.
A) formulating questions. B) doing experiments. C) drawing conclusions.
A) has been tested by many observations. B) must still be tested by experiments. C) that can never be changed.
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. |