A) group to group. B) row to row. C) element to element. D) column to column.
A) cooking an egg B) dissolving salt in water C) burning wood into charcoal D) rusting iron
A) nuclei of the atoms. B) movement of the electrons. C) bonds. D) bonds.
A) one atom of oxygen B) two atoms of chlorine C) one atom of chlorine D) two atoms 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) the use of lenses and microscopes. B) science that uses computers. C) the use of knowledge to solve problems. D) new inventions.
A) neutrons B) protons C) protons and neutrons D) valence electrons
A) eating or drinking from laboratory glassware. B) touching hot objects with your bare hands. C) testing on odor by directly inhaling the vapor. D) tying back long hair and loose clothing.
A) evaporation B) freezing C) condensation
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) production of a gas C) change in shape D) formation of a precipitate
A) was a vibrating string. B) light energy in a vacuum. C) planets orbiting the sun.
A) a solution. B) a suspension. C) a colloid.
A) bonds between atoms break down. B) particles that make up a substance move.
A) beta decay B) gamma 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) does not change B) increases C) decreases
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) condensation B) sublimation C) melting
A) water. B) table salt. C) gold. D) hydrogen.
A) iron ions with a + 2 charge B) iron ions with a + 11 charge
A) on the right side B) on the left-most 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) chemical bonds B) physical bonds C) electric currents
A) melting B) boiling C) freezing
A) ice being carved B) water breaking down into hydrogen and oxygen C) water boiling
A) solid B) gas C) liquid
A) their outermost energy level is full with 4 electrons B) their outermost energy level is full with 8 electrons
A) electrons plus the number of neutrons B) protons. C) protons plus the number of neutrons.
A) scientific method. B) conclusion C) hypothesis
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 seen and touched. C) can be weighted.
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) energy. C) pressure.
A) is absorbed B) is created C) is released D) is destroyed
A) milk B) carbon dioxide C) oxygen D) water
A) tremendous amounts of mass. B) very small amounts of mass.
A) doing experiments. B) formulating questions. C) drawing conclusions.
A) that can never be changed. B) has been tested by many observations. 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) doing experiments. C) drawing conclusions.
A) a total of eight neutrons and electrons. B) eight neutrons in its nucleus. C) eight protons in its nucleus |