Question 2 options:Which is an example of an ionic bond?
Calcium gives an electron to chlorine to form a stable bond
ions in a bar of pure iron are surrounded by many valence electrons
There are less than 16 valence electrons in two chlorine atoms.
Question 3 options: Which is an example of a covalent bond?
A.Ions in a bar of pure iron are surrounded by a large number of valence electrons
B. silver ions are surrounded by a sea of valence electrons
C.some electrons in carbon dioxide function as valence electrons in both carbon and oxygen
Question 4 options: Which is an example of a metallic bond?
Sodium gives an electron to chlorine to form a stable bond
Chlorine accepts an electron from calcium
Silver ions are surrounded by a large group of valence electrons
Question 5 options: Which of the following is an ionic compound?
magnesium chloride
-white crystal flakes at room temperature
-conducts electricity when dissolved in water
carbon monoxide
-gas at room temperature
-colorless and odorless
gold
-shiny metallic color
-can be hammered into different shapes
Which of the following is a covalent compound?
Question 6 options:
water
-liquid at room temperature
-formed from hydrogen and oxygen
magnesium oxide
-forms small crystals
-crystals are hard but brittle
copper
-metallic color
-can be hammered into different shapes
Question 7 options: Which of the following is a metal?
methane
-gas at room temperature
-electrons shared between carbon and hydrogen
copper
-can be hammered into different shapes
-electrons not bound to any one copper ion
water
-liquid at room temperature
-formed from hydrogen and oxygen
Question 8 options: Which of the following is an example of an organic compound?
A.potassium bromide
B.water molecule
C. ethanol molecule
Question 9 options: Which of the following is an organic compound?
Sample A contains carbon, hydrogen, and oxygen
Sample B contains cesium and chlorine
Sample C contains nitrogen and oxygen
Question 10 options: Which of the following is an INORGANIC compound?
Sample A contains carbon, hydrogen, and oxygen
Sample B contains carbon, hydrogen, and bromine
Sample C contains aluminum, hydrogen, and oxygen
Which of the following is an acid?
Question 11 options: Which of the following is an acid?
LiOH
-bitter taste
-accepts protons
H20
-liquid at room temperature
-no taste or odor
HNO3
-sour taste
-gives off protons in water
Question 12 options: Lithium has one valence electron. Bromine has seven valence electrons. How might they form a chemical bond?
A.Lithium donates an electron to bromine
B.Bromine donates an electron to lithium
C. Bromine donates seven electrons to lithium
Many aluminum ions join together to form an aluminum can. How might they be bonded to each other?
Question 13 options:
A. Each pair of aluminum atoms shares two electrons
B. electrons are shared between all aluminum ions in the bar
C. the atoms in a bar of aluminum are not bonded together
A chlorine atom has seven valence electrons. How could two chlorine atoms bond so that each atom has an octet of valence electrons?
Question 14 options:
A. One chlorine atom could donate electrons to the other chlorine atom
B. the chlorine atoms could share a pair of valence electrons
C.chlorine atoms cannot bond together
Question 15 options: Magnesium has two valence electrons, and oxygen has six valence electrons. What type of bonding is likely to occur between a magnesium atom and an oxygen atom?
A. Magnesium will give two electrons to oxygen and both will become ions.
B. oxygen will give two electrons to magnesium and both will become ions.
C. magnesium and oxygen atoms will be surrounded by a pool of electrons
Question 18 options:
Potassium bromide is an ionic compound. If you dissolve potassium bromide in water and add electricity, what will happen? It will ______.
A.explode
B.allow ions to flow through the water
C.become an acid
The atoms in a copper bar are held together by metallic bonding. What would happen if you ran over a copper bar with a car? It would ______.
Question 19 options:
C. shatter
B.become an ionic compound
C.be bent or flattened into a different shape
