Question
What do all atoms of alkali metals have in common? (1 point)
Responses
the same number of valence electrons
the same number of valence electrons
the same number of neutrons
the same number of neutrons
the same number of protons
the same number of protons
the same number of electron shells
In an example of a chemical reaction, atoms of one element each lose an electron. Atoms of another element each gain an electron. What could be the two elements? (1 point)
Responses
two halogens
two halogens
an alkali metal and a halogen
an alkali metal and a halogen
a halogen and a noble gas
a halogen and a noble gas
two alkaline earth metals
In the periodic table, where is the set of elements that have exactly 2 valence electrons in their atoms? (1 point)
Responses
group 2, the second column of the table
group 2, the second column of the table
group 18, the noble gases at the far right of the table
group 18, the noble gases at the far right of the table
the second period, or row of the table
the second period, or row of the table
a stair-step line in groups 13 to 16 of the table
a stair-step line in groups 13 to 16 of the table
Which two elements will react to form a salt, such as common table salt?(1 point)
Responses
two alkali earth metals
two alkali earth metals
an alkali metal and a halogen
an alkali metal and a halogen
a transition metal and a noble gas
a transition metal and a noble gas
two transition metals
Which combination of protons, neutrons, and electrons describes an ion with a positive charge? (1 point)
Responses
10 protons, 9 neutrons, 10 electrons
10 protons, 9 neutrons, 10 electrons
8 protons, 9 neutrons, 8 electrons
8 protons, 9 neutrons, 8 electrons
9 protons, 9 neutrons, 8 electrons
9 protons, 9 neutrons, 8 electrons
7 protons, 7 neutrons, 8 electrons
Responses
the same number of valence electrons
the same number of valence electrons
the same number of neutrons
the same number of neutrons
the same number of protons
the same number of protons
the same number of electron shells
In an example of a chemical reaction, atoms of one element each lose an electron. Atoms of another element each gain an electron. What could be the two elements? (1 point)
Responses
two halogens
two halogens
an alkali metal and a halogen
an alkali metal and a halogen
a halogen and a noble gas
a halogen and a noble gas
two alkaline earth metals
In the periodic table, where is the set of elements that have exactly 2 valence electrons in their atoms? (1 point)
Responses
group 2, the second column of the table
group 2, the second column of the table
group 18, the noble gases at the far right of the table
group 18, the noble gases at the far right of the table
the second period, or row of the table
the second period, or row of the table
a stair-step line in groups 13 to 16 of the table
a stair-step line in groups 13 to 16 of the table
Which two elements will react to form a salt, such as common table salt?(1 point)
Responses
two alkali earth metals
two alkali earth metals
an alkali metal and a halogen
an alkali metal and a halogen
a transition metal and a noble gas
a transition metal and a noble gas
two transition metals
Which combination of protons, neutrons, and electrons describes an ion with a positive charge? (1 point)
Responses
10 protons, 9 neutrons, 10 electrons
10 protons, 9 neutrons, 10 electrons
8 protons, 9 neutrons, 8 electrons
8 protons, 9 neutrons, 8 electrons
9 protons, 9 neutrons, 8 electrons
9 protons, 9 neutrons, 8 electrons
7 protons, 7 neutrons, 8 electrons
Answers
Answered by
GPT-4o mini
1. **What do all atoms of alkali metals have in common?**
**Response:** the same number of valence electrons
2. **In an example of a chemical reaction, atoms of one element each lose an electron. Atoms of another element each gain an electron. What could be the two elements?**
**Response:** an alkali metal and a halogen
3. **In the periodic table, where is the set of elements that have exactly 2 valence electrons in their atoms?**
**Response:** group 2, the second column of the table
4. **Which two elements will react to form a salt, such as common table salt?**
**Response:** an alkali metal and a halogen
5. **Which combination of protons, neutrons, and electrons describes an ion with a positive charge?**
**Response:** 9 protons, 9 neutrons, 8 electrons
**Response:** the same number of valence electrons
2. **In an example of a chemical reaction, atoms of one element each lose an electron. Atoms of another element each gain an electron. What could be the two elements?**
**Response:** an alkali metal and a halogen
3. **In the periodic table, where is the set of elements that have exactly 2 valence electrons in their atoms?**
**Response:** group 2, the second column of the table
4. **Which two elements will react to form a salt, such as common table salt?**
**Response:** an alkali metal and a halogen
5. **Which combination of protons, neutrons, and electrons describes an ion with a positive charge?**
**Response:** 9 protons, 9 neutrons, 8 electrons