Show:
Matter
The Atom
Elements/Compounds
Ionic Compounds
Bonding
100
What are three examples of matter?
Multiple answers.
100
Where in an atom do nuclear reactions happen?
The nucleus.
100
How many valence electrons does bismuth (#83) have?
5 Valence Electrons
100
Using your periodic table, what is the charge of Aluminum?
+3
100
What is an anion?
A negative ion.
200
What is matter?
Matter is anything that has mass and volume.
200
What is an atom?
The smallest unit of an element that retains the chemical properties of that element and can exist as a separate particle
200
What color will you expect for flame test of lithium chloride? Look at the data: lithium sulfate - red, potassium chloride - purple, calcium iodide - orange
Red.
200
To create an ion from a neutral atom, which particle is changed?
The electron(s).
200
What is an ionic bond?
A type of bonding that is the result of the transfer of electrons from a cation (usually metal) to an anion (usually non-metal).
300
What is the density of a liquid if the mass is 20g and the volume is 4 mL. Units required. Density=mass/volume
20/4= 5g/mL
300
What are the three particles that make up an atom. For full points, say their location and change.
protons = in nucleus, positive; neutrons= in nucleus, neutral; electrons= outside nucleus, negative
300
If you saw a container labeled H2O (s), what would you expect to see inside? Explain why.
Ice, because solid water is ice.
300
Name the ionic compound CaI2.
calcium iodide
300
What does insoluble mean?
A substance is insoluble if does not dissolve in a particular solvent.
400
The density of an iron nail is the same as the density of an iron frying pan. Explain why in as much detail as possible.
The frying pan and nail are both made of iron. Since they are both made of iron they have the same density.
400
An isotope of silicon has 14 protons and 15 neutrons. What is the mass of this isotope? Mass= protons + neutrons
14 + 15 = 29 amu(not required)
400
Looking at the Halogen Family, which element has the greatest reactivity? Why?
Fluorine is the most reactive Halogen because non-mentals are less reactive as you go down a family.
400
What is the formula for silver (I) chromate?
Ag2CrO24/sub> Ag = +1 CrO24/sub> = -2
400
Do all solid substances containing metals conduct electricity? Explain your reasoning.
Metals conduct electricity when bonded with other metals. metals in an ionic compound will conduct electricity when dissolved in water.
500
Explain why air is considered matter in complete sentences. Put as much detail as you can into your answer.
Air is made up of particles. Even if we cannot feel the mass or the space it takes up, it has oxygen in it that helps us breath. Additionally we can fill balloon with air.
500
What is a nuclear chain reaction?
A nuclear reaction in which neutrons emitted from the nucleus during fission strike surrounding nuclei, causing them to split apart as well.
500
Explain the difference between elements and compounds?
Elements are the building blocks of matter. Compounds are made up of two or more elements.
500
Using either the rule of zero or the octet rule (rule of 8), explain if NaS is an ionic compound
The compound doesn't exist. Rule of Zero: Na is +1 S is +2 since there is only one Na, the charges do not cancel out. Octet rule: Na has 1 Ve, S has 6 Ve, 1+6=7, which is not a multiple of 8.
500
What are the 4 types of bonding?
Ionic, Metallic, Network Covalent, Molecular Covalent,