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Atoms #2

Science test on atoms

the what is the particle in the nucleus that carries a positive charge and is counted to identify the atomic number? proton
the new substance formed when elements combine chemically is a? compound
anything that has a mass and takes up space is? matter
the particles in the atom that account for most of the mass of the atom are protons and? neutrons
elements that are shiny, malleable, ductile,good conductors of heat and electricity, and makeup most of the periodic table are? metals
what is a solution an example of? homogeneous mixture
the nucleus of one atom contains 12 protons and 12 neutrons, while the nucleus of another atom contains 12 protons and 16 neutrons. What are the atoms? two isotopes of an element
what is a compound? a combination of two or more elements
what does the atom consist of? protons, neutron, and electron
in an atom, where is an electron located? in a cloudlike formation surrounding the nucleus
how is matter defined? anything that has a mass, and takes up space
what are two atoms that have the same number of protons called? isotopes
name an example of an heterogeneous mixture? a salad
what is the ratio of sulfur atoms to oxygen atoms in SO'2? 1/2
which element contains seven protons? nitrogen
which scientist introduced the idea that matter is made up of tiny, individual bits called atoms? democritus
which scientist envisioned the atom as a ball of positive charge with electrons embedded in it? thomson
Created by: 9oscar9