A) row to row. B) element to element. C) group to group. D) column to column.
A) dissolving salt in water B) burning wood into charcoal C) cooking an egg D) rusting iron
A) bonds. B) movement of the electrons. C) nuclei of the atoms. D) bonds.
A) two atoms of chlorine B) one atom of chlorine C) two atoms of oxygen D) one atom of oxygen
A) tastes sour B) usually reacts with a metal C) changes the color of an indicator D) feels slipperychanges the color of an indicator
A) new inventions. B) the use of lenses and microscopes. C) science that uses computers. D) the use of knowledge to solve problems.
A) protons and neutrons B) valence electrons C) protons D) 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) evaporation B) freezing C) condensation
A) one atom’s nucleus and another atom’s electrons B) atoms with neutral charges C) ions with opposite charges
A) production of a gas B) change in color C) formation of a precipitate D) change in shape
A) planets orbiting the sun. B) was a vibrating string. C) light energy in a vacuum.
A) a colloid. B) a suspension. C) a solution.
A) particles that make up a substance move. B) bonds between atoms break down.
A) gamma decay B) alpha decay C) beta decay
A) the number of electrons in outermost energy level B) the number of neutrons in the nucleus C) the number of protons in the nucleus
A) chemical change B) physical change.
A) 0.123 m. B) 12.3 m. C) 1.23 m.
A) decreases B) increases C) does not change
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) condensation B) sublimation C) melting
A) gold. B) hydrogen. C) table salt. 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) not uniform throughout.(this means it IS NOT the same) B) uniform throughout. ( this means it IS the same)
A) chemical bonds B) electric currents C) physical bonds
A) freezing B) melting C) boiling
A) ice being carved B) water boiling C) water breaking down into hydrogen and oxygen
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. B) electrons plus the number of neutrons C) protons plus the number of neutrons.
A) conclusion B) scientific method. C) hypothesis
A) Kelvin. B) mole. C) ampere.
A) oxygen (O) and calcium (Ca) B) helium (He) and copper (Cu) 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) 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) +1 C) 0
A) viscosity. B) pressure. C) energy.
A) is created B) is released C) is destroyed D) is absorbed
A) milk B) oxygen C) carbon dioxide D) water
A) tremendous amounts of mass. B) very small 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) 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) a total of eight neutrons and electrons. C) eight neutrons in its nucleus. |