atoms are:, the largest part of matter., types of metals., tiny partículas that make up all matter., The center of am atom, madre of protons and neutrons, si called the:, electron cloud, nucleus , shell, A molecule is formed when: , atoms disappear , a liquid freezes, two or more atoms join together, Which of the following is a simple molecule, water ( H2O), oxigen (O2), carbon dioxide (CO2), The atomic number tells you the number of:, neutrons , electrons only, protons, Which of the following is a physical property?, rusting, mass , cooking, Which material is opaque?, clear glass , a wooden door , wax paper, Metals that can be stretched into wires show:, ductility, elasticity , hardness.

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