The Carbon Element

Electrons move around ___________ the nucleus and have a _________ charge.

• inside, positive

• on top of, negative

• outside, negative

• without, neutral

The center of an atom is called the ___________.

• middle

• top

• nucleus

• electron

The atomic number determines ____________

• its symbol

• what the element is

• the number of protons and neutrons

• the number of proton in the atom

What are the two parts of the nucleus?

• protons and electrons

• particles and molecules

• protons and neutrons

• protons and atomic number

Which particle of an atom has a positive charge?

• proton

• electron

• neutron

• nucleus

Neutrons have a neutral charge.

• true

• false

Which of these statements is not true about Carbon?

• it is the most important element to life

• it is able to form very stable bonds

• it is the main element in organic compounds

• it can be found in carbohydrates

Why is Carbon essential for life?

• it is the 6th element on the periodic table

• it is an element found in all living things

• it is the main element in organic compounds

• it has four protons on its outermost shell

What other elements, besides Carbon, are found in all living things in different percentages?

• Beryllium, Oxygen, Nitrogen, Lithium, Hydrogen

• Phosphorus, Boron, Helium, Sulfur, Oxygen

• Sulfur, Oxygen, Nitrogen, Phosphorus, Hydrogen

• Lithium, Boron, Oxygen, Nitrogen, Sulfur

What are the four organic molecules found in living things?

• Carbohydrates, Lipids, Nucleic Acids, and Oxygen

• Carbohydrates, Lipids, Proteins, and Nucleic acids

• Carbohydrates, Lipids, Proteins, and Carbon

• Carbohydrates, Lipids, Oxygen, and Nucleic acids