Worksheets1. Biochemistry Pre-Test
Total questions: 12
Worksheet time: 6mins
Which element is made up of the smallest atoms?
Hydrogen (H)
Helium (He)
Boron (B)
Beryllium (Be)
Which element is made up of the largest atoms?
Lawrencium (Lr)
Lutetium (Lu)
Ununseptium (UUs)
Ununoctium (UUo)
How many protons are found in a sodium (Na) atom?
11
23
12
How many neutrons are found in an oxygen (O) atom?
8
15
16
24
How many electrons are found in a nitrogen (N) atom?
7
14
21
22
How many oxygen atoms are found in a molecule of water (H2O)?
1
2
3
4
Use the chemical equation for photosynthesis to answer the problem. How many carbon atoms are in the reactants?
1
2
6
12
Use the chemical equation for photosynthesis to answer the problem. How many oxygen atoms are in the products?
2
6
8
18
Use the chemical equation for photosynthesis to answer the problem. How many water molecules are in the reactants?
1
2
6
12
Use the chemical equation for photosynthesis to answer the problem. Is the chemical equation balanced? In other words, do the number of each atom in the reactants equal the number of each atom in the products?
Yes
No
Examine the picture. This is a model of which atom?
Carbon (C)
Nitrogen (N)
Magnesium (Mg)
Argon (Ar)
Examine the picture. This is a model of which atom?
Nickel
Nitrogen
Neon
Nobelium
