Atoms and their parts

Front

The atomic number of an element is the same as its...

Back

number of protons

Answer explanation

The atomic number of an element is defined as the number of protons in its nucleus. This number determines the element's identity and its position in the periodic table, making 'number of protons' the correct answer.

Front

What is the atomic mass of an atom?

Back

The number of protons and neutrons.

Answer explanation

The atomic mass of an atom is determined by the total number of protons and neutrons in its nucleus. Electrons have negligible mass and do not contribute to the atomic mass.

Front

An atom that is just a single proton is

Back

hydrogen

Answer explanation

An atom with just a single proton is hydrogen, the simplest element. Carbon has six protons, oxygen has eight, and 'neutral' refers to charge, not atomic identity.

Front

The number of protons in an atom always equals the number of:
- electrons
- neutrons
- elements
- grams

Back

electrons

Answer explanation

In a neutral atom, the number of protons equals the number of electrons, ensuring electrical balance. Neutrons can vary, leading to different isotopes, while elements refer to distinct types of atoms.

Front

The number of protons in an atom determines

Back

what it is

Answer explanation

The number of protons in an atom defines its atomic number, which determines the element's identity. Therefore, the correct answer is 'what it is', as it specifies the type of element.

Front

How many electrons does this oxygen atom have?

Back

8

Answer explanation

An oxygen atom has 8 electrons, which is equal to its atomic number (8). This is the correct answer, as it reflects the number of protons in the nucleus, determining the electron count in a neutral atom.

Front

How many protons does this atom have?

Back

8

Answer explanation

The number of protons in an atom is equal to its atomic number. An atom with 8 protons corresponds to oxygen, which has an atomic number of 8. Therefore, the correct answer is 8.

Front

How many electrons can interact or bond with another atom?

Back

6

Answer explanation

The correct answer is 6 because in a typical bonding scenario, atoms can share or transfer up to 6 electrons in their outer shell, allowing for stable interactions with other atoms.

Front

How many oxygen ATOMS are in this reaction?

Back

4

Answer explanation

In the reaction, count the oxygen atoms from the reactants and products. If there are 4 oxygen atoms total, the correct answer is 4.

Front

What is the coefficient for carbon dioxide in this reaction?

Back

1

Answer explanation

In the given reaction, the coefficient for carbon dioxide is 1, indicating that one molecule of carbon dioxide is produced or consumed. This is the correct choice among the options provided.