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Worksheetsc h e m 1 Exam Review
Total questions: 29
Worksheet time: 7hrs 32mins
What do we use for measuring liquid volume?
Graduated Cylinder
Beaker
When we measure mass in lab, what metric unit do we write next to our measurement?
Grams
Ml
Pounds
Oz
What are the steps to use a digital balance? (select all, just to study do them in order)
Set to zero
Put on material
Take measurement in grams
Tare the material container (empty)
Blow on scale
What does a chemical reaction apply to?
Changes the nucleus
Changes the substance
Changes just the state of matter
What does a physical change have?
Changes the substance
Changes just the state of matter
Changes the nucleus
What does a nuclear reaction have?
Changes the nucleus
Changes just the state of matter
Changes the substance
What are the 4 characteristics of metals?
Malleable, Conductive, Ductile, Lustrous
Conductive, Ductile, Lustrous, Rough
Malleable, Non Conductive, Ductile, Lustrous
Dull, Conductive, Ductile, Lustrous
What are the characteristics of non metals?
Non Conductive, Brittle, Not lustrous, Not ductile, Not malleable, High Ionization, High electronegativity
Not lustrous, Not ductile, Not malleable, High Ionization, High electronegativity, Conductive
Non Conductive, Brittle, Volatile, Not lustrous, Not ductile, High Ionization, High electronegativity
Brittle, Not lustrous, Not ductile, Non Conductive, Chicken, High Ionization, High electronegativity
What is an isotope?
An atom or molecule that loses or gains electrons
The possible change in mass of an element
Which subatomic particle is most important in identifying an atom
The Neutron
The Electron
The proton
If you have a large atom, is it more likely to undergo nuclear fusion or fission?
Fusion
Fission
What is radioactivity?
Radioactive decay from the nucleus caused by the nucleus weak force
^
What are the 3 types of radioactivity? Select all.
Beta
Gamma
Alpha
Proton
Why do nuclear reactions release so much energy?
because because
Because the mass becomes energy
Because you need a lot of energy to do it
Which elements are unreactive?
Halogens
Nonmetals
Noble Gases
Transition Metals
What is the trend for electronegativity? (on the periodic table)
Top right is highest
Bottom right is the highest
What is the trend for Ionization energy? (idrk this one either but what the heck)
Top right is highest
Bottom right is highest
What is the trend for atomic radius?
Bottom left is highest
Top right is highest
What is the trend for valence electrons?
Increases by group left to right
Decreases by group left to right
If you go down a group, what happens to the number of valence electrons?
They decrease
They increase
They throw a party
What are 2 elements that are likely to have similar physical properties to Sodium?
Potassium, Calcium
Lithium, Calcium
Potassium, Lithium
Lithium, Chicken
What are the 3 chemical bonds?
Ionic
Covalent
Metal
Metallic
Why do chemical bonds form?
Because chemicals like to go to prom together
Because atoms are more stable when their electrons are bonded together
Because americans are racist
What is a diatomic molecule?
A molecule that is made up of 2 atoms, because it cannot be a single atom by itself
A molecule that goes out to eat way to often. To Mcdonalds. And eats the napkins.
A molecule that stands by itself
How are single, double, and triple covalent bonds different from each other? (select all that apply)
Double bonds have more bonds with the electrons, so they are stronger than single bonds
Triple bonds have more bonds with the electrons, so they are stronger than single and double bonds
Single bonds are the weakest bonds since they have only one bond
Define Intermolecular force (IMF)
The force of molecules bonding over electrons (attractive forces between molecules) positive and negative attract
Yeet
yeeting
How does IMF affect the boiling point or melting point of a substance?
Strong IMF makes it hard to melt or boil a substance, and weak IMF becomes a liquid or gas easily
yeet or be yeeted
What are the properties of ionic covalent and metallic substances?
Ionic-high melting point, soluble, good conductors solid/water,
Covalent- low melting points, most liquid and gases, non conductors of electricity, non soluble unless polar, form molecules
Metallic- electrons move from atom to atom, electrical conductors, high melting points, solid except Hg, Lustrous, Malleable, Ductile
All of the above are true
What is an ion?
The possible change in mass of an element
An atom or molecule that loses or gains electrons
