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Atoms #2
Science test on atoms
| Question | Answer |
|---|---|
| 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
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