A) group to group. B) element to element. C) column to column. D) row to row.
A) rusting iron B) dissolving salt in water C) burning wood into charcoal D) cooking an egg
A) nuclei of the atoms. B) bonds. C) movement of the electrons. D) bonds.
A) two atoms of oxygen B) two atoms of chlorine C) one atom of chlorine D) one atom 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) new inventions. B) the use of knowledge to solve problems. C) the use of lenses and microscopes. D) science that uses computers.
A) valence electrons B) protons and neutrons C) protons D) neutrons
A) testing on odor by directly inhaling the vapor. B) touching hot objects with your bare hands. C) tying back long hair and loose clothing. D) eating or drinking from laboratory glassware.
A) condensation B) freezing C) evaporation
A) ions with opposite charges B) atoms with neutral charges C) one atom’s nucleus and another atom’s electrons
A) formation of a precipitate B) change in color C) change in shape D) production of a gas
A) planets orbiting the sun. B) was a vibrating string. C) light energy in a vacuum.
A) a suspension. B) a colloid. C) a solution.
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 electrons in outermost energy level C) the number of protons in the nucleus
A) chemical change B) physical change.
A) 1.23 m. B) 12.3 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) melting B) sublimation C) condensation
A) gold. B) hydrogen. C) table salt. D) water.
A) iron ions with a + 2 charge B) iron ions with a + 11 charge
A) on the left-most side B) on the right side C) in the bottom rows
A) gas B) liquid C) solid
A) not uniform throughout.(this means it IS NOT the same) B) uniform throughout. ( this means it IS the same)
A) electric currents B) chemical bonds C) physical bonds
A) melting B) freezing C) boiling
A) water boiling B) ice being carved C) water breaking down into hydrogen and oxygen
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) conclusion B) hypothesis C) scientific method.
A) Kelvin. B) ampere. C) mole.
A) helium (He) and copper (Cu) B) iron (Fe) and potassium (K) C) oxygen (O) and calcium (Ca)
A) cold water B) hot water C) warm water
A) can be weighted. B) has mass and takes up space. C) can be seen and touched.
A) Never work with chemicals. B) Never do experiments that involve flames or hot objects. C) Always follow your teacher’s instructions and textbook directions exactly.
A) two carbon atoms. B) two oxygen atoms.
A) +1 B) -1 C) 0
A) viscosity. B) pressure. C) energy.
A) is absorbed B) is destroyed C) is created D) is released
A) carbon dioxide B) milk 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) has been tested by many observations. B) that can never be changed. 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. |