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Introducing new Paper mode
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20 questions
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- Multiple ChoicePlease save your changes before editing any questions.
Which subatomic part of an atom gives it a positive charge?
Neutron
Proton
Electron
Nucleus
- Multiple ChoicePlease save your changes before editing any questions.
What is the smallest 'building block' of the elements that make up the universe?
An atom
An electron
A proton
A cell
- Multiple ChoicePlease save your changes before editing any questions.
An atom of carbon has 6 protons and 7 neutrons in its nucleus. If the atom is neutral, how many electrons does it have?
0
7
6
13
- Multiple ChoicePlease save your changes before editing any questions.
A certain atom of oxygen contains 8 protons, 8 neutrons, & 8 electrons. Another atom of unknown identity contains 9 protons. Which of the following MUST be true about this unidentified atom?
It has 9 neutrons in its nucleus.
It is an isotope of oxygen.
Its atomic mass is a decimal number.
It cannot be an atom of oxygen.
- Multiple ChoicePlease save your changes before editing any questions.
An atom of neon has 8 valence electrons. What will an atom of neon MOST likely do to be stable?
Gain 1 electron
Lose 2 electrons
Lose 8 electrons
Neither gain nor lose any valence electrons
- Multiple ChoicePlease save your changes before editing any questions.
What type of bond is formed when atoms share electrons?
Covalent
Ionic
Hydrogen
Polyatomic
- Multiple ChoicePlease save your changes before editing any questions.
How are ionic and covalent bonds alike?
They both form organic molecules.
They both fill outer electron shells.
They both transfer electrons from one atom to another.
They both transfer protons from one atom to another.
- Multiple ChoicePlease save your changes before editing any questions.
A substance with a pH of 8 is a
acid
base
neutral
- Multiple ChoicePlease save your changes before editing any questions.
Carbon has 4 valence electrons which means
it can only form bonds with carbon
it is stable
it can make ionic bonds
it wants to make 4 covalent bonds
- Multiple ChoicePlease save your changes before editing any questions.
The electrons in the outermost energy level are called
valence
ions
covalent
farthest out
- Multiple ChoicePlease save your changes before editing any questions.
This reaction is showing energy being _____________
Absorbed
Released
There is no change in energy shown
- Multiple ChoicePlease save your changes before editing any questions.
Activation energy is
The energy to start a car
The energy needed to break down CO2
The energy needed to start a reaction
The energy used to digest food
- Multiple ChoicePlease save your changes before editing any questions.
Acids have more ______ ions than bases
OH-
H-
OH+
H+
- Multiple ChoicePlease save your changes before editing any questions.
If salt is dissolved in water, water is the ____________
Solution
Solute
Solvent
Suspension
- Multiple ChoicePlease save your changes before editing any questions.
An example of a carbohydrate would be
meat
milk
eggs
bread
- Multiple ChoicePlease save your changes before editing any questions.
Which of the following would be considered most acidic?
1
3
7
13
- Multiple ChoicePlease save your changes before editing any questions.
The image shows the periodic grid for SODIUM. What is Sodium's atomic mass?
11
12
23
Impossible to tell
- Multiple ChoicePlease save your changes before editing any questions.
What element will have the most similar physical and chemical properties to the element Sulfur (S)?
(click on the periodic table to expand it!)
Carbon (C)
Phosphorous (P)
Oxygen (O)
Neon (Ne
- Multiple ChoicePlease save your changes before editing any questions.What two elements make up water?Helium and oxygenHydrogen and oxygenhelium and carbonoxygen and carbon
- Multiple ChoicePlease save your changes before editing any questions.
A substance that changes the rate of a chemical reaction without being used up in the reaction is called a ________________.
bond
catalyst
acid
ion