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