CHEM120 Week 1 Review

Question 1

For an atom that contains 2 protons and 5 neutrons, the mass number is...

Accepted Answer

7

Question 2

I have reviewed the CHEM120 resources in Canvas FILES and ACADEMIC SUPPORT. I will use these, study, and email for help.

Accepted Answer

True

Question 3

How many grams are in 10 kg?

Accepted Answer

10,000

Question 4

What is the mass of a solution with a density of 5.00 g/mL and a volume of 10.0 mL?

Accepted Answer

50.00 mL

Question 5

How many protons are in Boron-15?

Accepted Answer

5

Question 6

You are testing the effect of a new at-home eczema cream in 100 patients. What is the easiest to keep constant?

Accepted Answer

Amount of cream applied

Question 7

CO2 is considered...

Accepted Answer

a compound

Question 8

For an atom that contains 2 protons and 5 neutrons, the atomic number is:

Accepted Answer

2

Question 9

How many electrons are in Boron ion?

Accepted Answer

2

Question 10

What is the name of an isotope of Boron containing 7 neutrons.

Accepted Answer

Boron-12

Question 11

How many neutrons are in Boron?

Accepted Answer

6

Question 12

You are testing the effect of heat on cooking time. What is a positive control?

Accepted Answer

The temperature previously used

Question 13

Which of the following is an isotope with a mass of 14 and an atomic number of 12?

Accepted Answer

Magnesium-14

Question 14

What is the volume of a solution with a density of 5.00 g/mL and a mass of 10 g?

Accepted Answer

2 mL

Question 15

If a medicine has a dosage of 20 mL, how many doses are in one quart? (Hint: 1 cup = 240 mL)

Accepted Answer

48

Question 16

Which subatomic particle has a mass of 1 AMU and does not contribute to charge?

Accepted Answer

neutrons

Question 17

How many inches are in 3.60 feet?

Accepted Answer

43.2 inches

Question 18

Which is a physical property?

Accepted Answer

Mercury is a liquid metal

Question 19

How many electrons are in Fluoride anion?

Accepted Answer

10

Question 20

All atoms...

Accepted Answer

all choices are correct

Questions 20