Ionic
Covalent
IMF's
Bond Energy/ Electronegativity
Polar vs. Nonpolar
100
Identify the three states of matter that we have discussed so far.
What are solid, liquid and gas
100
What is the formula for density
What is density = mass \ (divided) by volume
100
Given the balanced equation representing a reaction: H2 + energy H + H What occurs as bonds are broken in one mole of H2 molecules during this reaction? A) Energy is absorbed and one mole of unbonded hydrogen atoms is produced. B) Energy is absorbed and two moles of unbonded hydrogen atoms are produced. C) Energy is released and one mole of unbonded hydrogen atoms is produced. D) Energy is released and two moles of unbonded hydrogen atoms are produced.
B) Energy is absorbed and two moles of unbonded hydrogen atoms are produced.
100
Define chemistry
What is the study of matter and how matter interacts
200
What two characteristics must something have if it is considered matter
Mass and take up space
200
Describe the attraction of molecules, and how they move in a solid
What is molecules are very attracted to each other and vibrate slowly
200
Identify one example of a unit for density
What is g/cm3 or kg/L
200
What does it mean if an object boils
What is it turns from a liquid to a gas.
200
What was Joseph Priestley's major discovery?
What is oxygen
300
Define AND give an example of a molecule
A molecule is made up of two or more atom. H2O
300
Describe the attraction of and how molecules move in a liquid
What is molecules have a "medium" attraction and and slide by one another
300
A substance has a mass of 10g and a volume of 2cm3. Would this substance sink or float in water? Support your answer using by calculating the density of this substance
What is it would sink because it's density is 5 g/cm3 which is larger than the density of water (1g/cm3).
300
What is the difference between boiling, and boiling point?
What is boiling is when an object turns from a liquid to a gas (through evaporation). Boiling point is the temperature when molecules start to turn to a gas.
300
Define an observation and give an example
What is something that you notice around you using your 5 senses. I see students in the classroom
400
True or False: Molecules can grow (get bigger) when they are heated
What is False
400
In order for a substance to change state from a solid, to a liquid, to a gas, what must be added?
What is energy (heat)
400
Two objects have the same mass but different volumes, will the object with the larger volume or smaller volume be more dense? why?
What is the object with the smaller volume will be more dense because there are more molecules packed into a smaller amount of space.
400
The melting point of water is 0C and the boiling point is 100C. What state of matter will water be in at 80C?
What is a liquid
400
Define an inference. Give an example
What is an explanation based on your observations. Example: Observation: I see students raising their hand Inference: They have a science idea to share
500
Identify how many atoms of each element there are in the following molecule.
What is C6H12O6
500
Based on what you know about molecules, describe why the ball no longer fit through the hoop in our classroom demonstration.
What is energy was transferred from the flame to the molecules in a solid. As the molecules heated up, they began to move faster and spread away from each other causing the metal ball to expand.
500
Liquid water and ice are both made of water molecules. How could it be possible for ice to float in water?
What is the molecules are arranged differently in ice than they are in water.
500
Explain why the melting point is always lower than the boiling point
Molecules need less energy (heat) to turn from a solid to a liquid compared to the energy (heat) they need to turn from a liquid to a gas.
500
What is the difference between an independent variable and a dependent variable?
What is the independent variable is the variable you choose to complete an experiment about. The dependent variable is what you are measuring or collecting data about.
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