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25 questions
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- Q1What is the difference between the substances represented by the symbols Co and CO?Co represents the element cobalt, and CO represents the element copper.They represent two substances, each made up of two elements.One is the symbol for an element, and one is a formula for a compound.They are two different ways to represent the element cobalt300sMS-PS1-1
- Q2Name the elements in water.oxygen and carbonwaterhydrogen and carbonhydrogen and oxygen300sMS-PS1-1
- Q3A student mixes a white solid and a clear liquid together. The mixture begins to bubble and fizz. Is this evidence that a chemical reaction occurred?YesNo300sMS-PS1-2
- Q4A student mixes a white solid and a clear liquid together. The mixture becomes orange. Is this evidence that a chemical reaction occurred?YesNo300sMS-PS1-2
- Q5A student mixes a white solid and a clear liquid together. The solid disappears into the liquid. Is this evidence that a chemical reaction occurred?YesNo300sMS-PS1-2
- Q6Look at the atomic model for sodium carbonate. How many atoms are in sodium carbonate?6352300sMS-PS1-5
- Q7Look at the atomic model for sodium carbonate. How many elements are in sodium carbonate?5623300sMS-PS1-5
- Q8True or False: You can create matter.FalseTrue300sMS-PS1-5
- Q9What happens to air particles in a syringe when they are compressed?They move apart and slow down.They move closer together and speed up.300sMS-PS1-4
- Q10What phase of matter has particles that are bonded so tightly together that they can only vibrate?solidliquidgas300s
- Q11What phase of matter has loosely bonded particles that can flow over one another?liquidsolidgas300sMS-PS1-4
- Q12What phase of matter has particles that are not bonded together and can move freely?gasliquidsolid300sMS-PS1-4
- Q13What happens when the kinetic energy of an object is increased?It heats up and expands.It cools down and contracts.300sMS-PS1-4
- Q14What is the name of the phase change when a solid turns into a liquid?EvaporationFreezingMelting300s
- Q15What is the name of the phase change when a gas turns into a liquid?evaporationfreezingcondensation300sMS-PS1-4