WorksheetsChemistry II. Intro quiz
Total questions: 16
Worksheet time: 7mins
What is the atomic symbol for Chlorine?
C
Cl
Ch
K
What does Ca represent in the periodic table?
Potassium
Carbon
Calcium
Chlorine
What is the atomic symbol for sodium?
S
So
N
Na
What is the atomic number for oxygen?
8
4
12
2
How many protons does Helium have?
2
3
8
12
How many electrons does Nitrogen have?
2
7
8
16
What is the atomic symbol for magnesium?
M
Ma
Mn
Mg
Which element has 3 electrons in the outermost shell?
Lithium
Boron
Oxygen
Sulphur
Which chemical reaction always starts with a hydrocarbon that reacts with oxygen and produces carbon dioxide and water?
Decomposition
Synthesis
Combustion
Single Replacement
Which phrase describes what happens to atoms in a chemical reaction?
never lost or gained, just rearranged
sometimes lost, never rearranged
sometimes lost, gained, or rearranged
lost or gained, never rearranged
In an endothermic reaction, heat is ...
taken in
given out
If a chemical reaction is EXOTHERMIC, the temperature of the surrounding would....
Stay the same
Increase
Decrease
In an endothermic reaction the reaction is releasing energy.
True
False
