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- 1. Multiple Choice
An atom has 10 protons and 11 neutrons. What is the atomic number
10
11
21
22
- 2. Multiple Choice
An atom has a mass of 35 and an atomic number of 17. How many neutrons does this atom have?
35
17
18
52
- 3. Multiple Choice
What charge do electrons have?
positive
negative
neutral
- 4. Multiple Choice
How are ions formed?
Gaining or losing protons
Gaining or losing neutrons
Gaining or losing electrons
Gaining of losing mass
- 5. Multiple Choice
An atom has 6 protons and 7 neutrons. What element is this?
Carbon
Nitrogen
Aluminum
Oxygen
- 6. Multiple Choice
What type of bonds share electrons?
hydrogen
covalent
ionic
- 7. Multiple Choice
What type of bond is shown in the image?
Hydrogen
Ionic
Covalent
- 8. Multiple Choice
Which of the following elements is a metal?
Sodium
Oxygen
Hydrogen
Argon
- 9. Multiple Choice
Why is water polar?
It has ionic bonds
It is partially charged
It has a neutral charge
It has a north and south pole
- 10. Multiple Choice
What to enzymes do?
speed up a chemical reaction
increase the energy of a reaction
increase the time of a reaction
- 11. Multiple Choice
Which is not a property of water?
Universal solvent
cohesion
low specific heat
adhesion
- 12. Multiple Choice
What type of bonds are shown between the water molecules in the image?
Covalent bonds
Ionic bonds
Hydrogen bonds
- 13. Multiple Choice
How many neutrons would be found in the following atom
5
6
10.811
11
- 14. Multiple Choice
How many protons would be found in the following atom?
9
10
18
19
- 15. Multiple Choice
At atom has 19 protons, 19 electrons and 20 neutrons. What is the mass of this atom?
19
20
38
39
- 16. Multiple Choice
Two atoms both have 6 protons and 6 electrons. One element has 6 neutrons and the other element has 7 neutrons. Which of the following is true?
The two elements are isotopes
They are two different elements
The two elements are ions
The two elements are bonded
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