Chemical Reactions - Middle School
Quiz by Mrs. Clarici
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- Q 1/20Score 0A tiny, negatively charged particle29electron
20 questions
Show answers
- Q1A tiny, negatively charged particleelectron30s
- Q2The electrons in the outermost shell (main energy level) of an atomvalence30s
- Q3Who developed atomic model in which electrons move rapidly around the nucleus in paths called orbits or shellsArchimedesDaltonBohrRutherford30s
- Q4Most reactive metal group on periodic tablealkali metals30s
- Q5Second most reactive metal group on periodic tablealkaline earth metals30s
- Q6Most reactive non metal grouphalogens30s
- Q7A chemical bond that involves one atom losing an electron and the other atom gaining an electron.ionic30s
- Q8A chemical bond that involves sharing a pair of electrons between atoms in a moleculecovalent30s
- Q9A charged atom or molecular groupion30s
- Q10What chemical reaction sign shows that a chemical reaction definitely happened?A Gas is formedOdor changesTemperature changesnew properties30s
- Q11The force between two atoms holding them together after a chemical reaction is called agravity.chemical bondelectromagnetic force.magnetism.30s
- Q12Reactants are on the left of a chemical equation and _____________________are on the right.productscoefficientssubscriptsmore reactants30s
- Q13What are the numbers to the lower right of an element symbol in a compound called?coefficientsevensubscriptsodd30s
- Q14Numbers found in front of an element symbol or compound in a chemcial equation are calledsmall numbersbig numberscoefficientssubscripts30s
- Q15A diagram showing the number of valence electrons on an element symbol is called aBohr diagram.electron dotphase change diagram.30s
