A) element to element. B) group to group. C) column to column. D) row to row.
A) rusting iron B) dissolving salt in water C) cooking an egg D) burning wood into charcoal
A) movement of the electrons. B) bonds. C) bonds. D) nuclei of the atoms.
A) two atoms of chlorine B) two atoms of oxygen C) one atom of oxygen D) one atom of chlorine
A) feels slipperychanges the color of an indicator B) tastes sour C) usually reacts with a metal 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) valence electrons B) neutrons C) protons D) protons and neutrons
A) tying back long hair and loose clothing. B) touching hot objects with your bare hands. C) testing on odor by directly inhaling the vapor. D) eating or drinking from laboratory glassware.
A) freezing B) evaporation C) condensation
A) ions with opposite charges B) atoms with neutral charges C) one atom’s nucleus and another atom’s electrons
A) change in shape B) production of a gas C) change in color 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) 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 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) 12.3 m. B) 1.23 m. C) 0.123 m.
A) does not change B) increases C) decreases
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) melting C) sublimation
A) water. B) hydrogen. C) table salt. D) gold.
A) iron ions with a + 2 charge B) iron ions with a + 11 charge
A) on the right side B) in the bottom rows C) on the left-most side
A) liquid B) solid C) gas
A) uniform throughout. ( this means it IS the same) B) not uniform throughout.(this means it IS NOT the same)
A) electric currents B) chemical bonds C) physical bonds
A) boiling B) melting C) freezing
A) water breaking down into hydrogen and oxygen B) water boiling C) ice being carved
A) liquid B) gas C) solid
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) hypothesis C) conclusion
A) mole. B) ampere. C) Kelvin.
A) iron (Fe) and potassium (K) B) helium (He) and copper (Cu) C) oxygen (O) and calcium (Ca)
A) hot water B) warm water C) cold water
A) can be weighted. B) can be seen and touched. 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 oxygen atoms. B) two carbon atoms.
A) -1 B) 0 C) +1
A) energy. B) pressure. C) viscosity.
A) is released B) is created C) is destroyed D) is absorbed
A) oxygen B) water C) carbon dioxide D) milk
A) tremendous amounts of mass. B) very small amounts of mass.
A) drawing conclusions. B) doing experiments. C) formulating questions.
A) that can never be changed. B) has been tested by many observations. C) must still be tested by experiments.
A) sharing of electrons between two nonmetals. B) transfer of electrons between metals and nonmetals. C) transfer of neutrons between two metals.
A) drawing conclusions. B) designing models. C) doing experiments.
A) eight neutrons in its nucleus. B) a total of eight neutrons and electrons. C) eight protons in its nucleus |