Chemistry Semester Final Exam

In covalent bonds, atoms...

• share a pair of electrons
• share an electron
• transfer electrons
• have an electron sea

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which type of atoms tend to form ionic bonds with each other?

• Metals only
• Metals and nonmetals
• Nonmetals only
• Noble Gases only

Using a periodic table, how many protons does Copper have?

• 29

• 63

• 64

• 35

Using a periodic table, how many neutrons are in Iron?

• 26

• 56

• 30

• 86

Using a periodic table, how many electrons are in Sulfur

• 16

• 32

• 32.066

• 48

What is the correct equation for Density

• Density equals volume divided by mass

• Density equals mass divided by volume

• Volume is equal to mass multiplied by density

• Volume is equal to density multiplied by mass

Calculate the density in g/mL of 30 mL of solution that weighs 120 grams

• 4 g/ml

• 4 ml/g

• .25 g/ml

• .25 ml/g

Which of the following is a chemical change

• cut banana turn brown

• freezing water

• melting butter

• tear paper

Which is a physical change

• Cutting a potato

• Acid reacting with metal

• Burning food

• food turning into energy

Which of the following is a heterogeneous mixture

• Salad

• Tea

• Chocolate milk

• All answers are Homogeneous