Looking at the periodic table, determine the charge of Sodium (Na) will make when it bonds with other atoms.
a
+6
b
+1
c
-6
d
-2
e
-1
f
+2
13 answers
The correct answer is d) -1. Sodium (Na) is in Group 1 of the periodic table, which means it has 1 valence electron. When it bonds with other atoms, it tends to lose this electron to achieve a stable electron configuration like a noble gas. By losing 1 electron, sodium forms a positive 1 charge, Na+.
Please review this model chemical reaction: A + 2B ---> C + 4D
Which of the above represents the reactants? Select ALL correct responses, below.
a
C
b
A
c
2B
d
C + 4D
Which of the above represents the reactants? Select ALL correct responses, below.
a
C
b
A
c
2B
d
C + 4D
The correct answers would be b) A and c) 2B. In the chemical reaction A + 2B ---> C + 4D, the reactants are A and 2B.
A bond between sodium (Na) and chlorine (Cl) is what type of bond?
A bond between sodium (Na) and chlorine (Cl) is an ionic bond.
How many valence electrons are in Oxygen?
Oxygen (O) has 6 valence electrons.
Column A
1.
A silver spoon tarnishing:
A silver spoon tarnishing
2.
Blowing a dandelion:
Blowing a dandelion
3.
Building a sand castle:
Building a sand castle
4.
Toasting bread:
Toasting bread
Column B
a.Chemical change
b.Physical change
1.
A silver spoon tarnishing:
A silver spoon tarnishing
2.
Blowing a dandelion:
Blowing a dandelion
3.
Building a sand castle:
Building a sand castle
4.
Toasting bread:
Toasting bread
Column B
a.Chemical change
b.Physical change
Column A
1. A silver spoon tarnishing: a. Chemical change
2. Blowing a dandelion: b. Physical change
3. Building a sandcastle: b. Physical change
4. Toasting bread: a. Chemical change
Column B
a. Chemical change
b. Physical change
1. A silver spoon tarnishing: a. Chemical change
2. Blowing a dandelion: b. Physical change
3. Building a sandcastle: b. Physical change
4. Toasting bread: a. Chemical change
Column B
a. Chemical change
b. Physical change
number of valence electrons present in Potassium (K).
Potassium (K) has 1 valence electron.
Why does a higher concentration increase the rate of reaction?
a
It lowers the activation energy.
b
It increases the surface area of the particles
c
It increases the frequency of collisions.
d
It decreases the amount of reactants.
a
It lowers the activation energy.
b
It increases the surface area of the particles
c
It increases the frequency of collisions.
d
It decreases the amount of reactants.
The correct answer is c) It increases the frequency of collisions.
A higher concentration increases the rate of reaction because it increases the number of particles or molecules of the reactants in a given volume. This leads to more frequent collisions between the reactant particles, which increases the chances of successful collisions and therefore increases the rate of the reaction.
A higher concentration increases the rate of reaction because it increases the number of particles or molecules of the reactants in a given volume. This leads to more frequent collisions between the reactant particles, which increases the chances of successful collisions and therefore increases the rate of the reaction.