A) column to column. B) element to element. C) row to row. D) group to group.
A) rusting iron B) dissolving salt in water C) burning wood into charcoal D) cooking an egg
A) bonds. B) bonds. C) nuclei of the atoms. D) movement of the electrons.
A) one atom of oxygen B) one atom of chlorine C) two atoms of oxygen D) two atoms of chlorine
A) usually reacts with a metal B) feels slipperychanges the color of an indicator C) changes the color of an indicator D) tastes sour
A) the use of lenses and microscopes. B) new inventions. C) science that uses computers. D) the use of knowledge to solve problems.
A) protons B) protons and neutrons C) valence electrons D) neutrons
A) touching hot objects with your bare hands. B) testing on odor by directly inhaling the vapor. C) eating or drinking from laboratory glassware. D) tying back long hair and loose clothing.
A) condensation B) evaporation C) freezing
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) planets orbiting the sun. B) was a vibrating string. C) light energy in a vacuum.
A) a suspension. B) a solution. C) a colloid.
A) particles that make up a substance move. B) bonds between atoms break down.
A) beta decay B) gamma decay C) alpha decay
A) the number of protons in the nucleus B) the number of neutrons in the nucleus C) the number of electrons in outermost energy level
A) physical change. B) chemical change
A) 0.123 m. B) 1.23 m. C) 12.3 m.
A) increases B) does not change 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) melting B) condensation C) sublimation
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 right side B) on the left-most side C) in the bottom rows
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) physical bonds B) chemical bonds C) electric currents
A) freezing B) melting C) boiling
A) ice being carved B) water boiling C) water breaking down into hydrogen and oxygen
A) gas B) liquid 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 plus the number of neutrons. C) protons.
A) conclusion B) scientific method. C) hypothesis
A) Kelvin. B) mole. C) ampere.
A) iron (Fe) and potassium (K) B) oxygen (O) and calcium (Ca) C) helium (He) and copper (Cu)
A) hot water B) cold 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) 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) +1 C) 0
A) viscosity. B) energy. C) pressure.
A) is destroyed B) is absorbed C) is created D) is released
A) oxygen B) milk C) carbon dioxide D) water
A) very small amounts of mass. B) tremendous amounts of mass.
A) doing experiments. B) drawing conclusions. C) formulating questions.
A) that can never be changed. B) must still be tested by experiments. C) has been tested by many observations.
A) transfer of electrons between metals and nonmetals. B) sharing of electrons between two nonmetals. C) transfer of neutrons between two metals.
A) drawing conclusions. B) doing experiments. C) designing models.
A) eight protons in its nucleus B) a total of eight neutrons and electrons. C) eight neutrons in its nucleus. |