Marathon 1

The ​ (a)   variable is manipulated/changed. The ​ (b)   variable is affected by the previous variable.

• independent
• dependent

What are the three domains of life? Select all that apply

• Archaea

• Bacteria

• Prokaryote

• Eukarya

• Eukaryotie

Draw an "X" where the reactants are and an "O" where the products are

Answer explanation

The reactants are to the left of the arrow.

The products are to the right of the arrow.

Draw an atom that would be able to bond to 3 other atoms

Answer explanation

The atom you drew should have three valence electrons.

Remember that valence electrons are the electrons found on the outermost shell.

Where can I find protons and neutrons?

• Nucleus

• Ribosomes

• Nucleoid

• Electron Shell

Match the bond to its description

• When an atom shares its electrons unequally with another atom

• Covalent

• When an atom shares its electrons equally with another atom

• Ionic

• When an atom shares its electrons with another atom

• Polar Covalent

• When an atom gives all of its electrons to another atom

• Nonpolar Covalent

Which of the following describes an isotope of Carbon?

Carbon has 6 protons and typically has 6 neutrons.

• A carbon atom with 5 protons and 6 neutrons

• A carbon atom with 6 protons and 7 neutrons

• A carbon atom with 6 protons and 6 neutrons

• A nitrogen atom with 5 protons and 6 neutrons

Mark with an 1 where you can find more H⁺ ions. Mark with an 2 where it is more basic. Mark with 3 where you can find water.

Answer explanation

1 should be on the left side (where it is more acidic)

2 should be on the right side (where there are fewer H⁺ ions)

3 should be at 7 because water is neutral

These functional groups contain carbon ​ (a)   ​, (b)   ​, (c)   . These functional groups do not ​ (d)   ,​ (e)   , phosphate

Please put you answer in alphabetical order to get full points

• carbonyl
• carboxyl
• methyl
• amino
• hydroxyl
• Ether
• Aldehyde

Match the functional groups to their chemical formula

• Carboxyl

• OH

• Carbonyl

• NH₂

• Hydroxyl

• C=O

• Amino

• OPO₃^-2

• Phosphate

• COOH