Group 1
8th grade (Year 9 in England) · 16 questions · Common Core: NGSS.MS-PS1-1, NGSS.HS-PS1-1 · England: KS3 Chemistry: The periodic table, GCSE Combined Science: Atomic structure and the periodic table
Name
Date
Score/ 16
Question 1
Complete the word equation: lithium + water → lithium hydroxide + ?
Answer
Question 2
Why are alkali metals stored under oil?
- A. to make them shiny
- B. to stop them reacting with oxygen and water vapour in the air
- C. because they are liquids
- D. to keep them warm
Question 3
The alkali metals: which statement is NOT true?
- A. Sodium is less dense than water, so it floats.
- B. Alkali metals form ions with a 1+ charge.
- C. Lithium is the most reactive alkali metal.
- D. Alkali metals react with water to make alkaline solutions.
Question 4
Complete the word equation: potassium + water → ? + hydrogen
Answer
Question 5
Why are alkali metals stored under oil?
- A. to keep them warm
- B. to make them shiny
- C. to stop them reacting with oxygen and water vapour in the air
- D. because they are liquids
Question 6
The alkali metals: which statement is NOT true?
- A. Alkali metals react with water to make alkaline solutions.
- B. Alkali metals are found pure in nature.
- C. Alkali metals form ions with a 1+ charge.
- D. Sodium is less dense than water, so it floats.
Question 7
Complete the word equation: potassium + water → potassium hydroxide + ?
Answer
Question 8
Melting points: lithium 181 °C, sodium 98 °C, potassium 63 °C, rubidium 39 °C. Which is the best prediction for caesium?
- A. about 29 °C
- B. about 300 °C
- C. about 75 °C
- D. about 200 °C
Question 9
The alkali metals: which statement is NOT true?
- A. Group 1 metals are soft enough to cut with a knife.
- B. Group 1 metals have two outer electrons.
- C. Alkali metals form ions with a 1+ charge.
- D. Alkali metals react with water to make alkaline solutions.
Question 10
Complete the word equation: potassium + water → potassium hydroxide + ?
Answer
Question 11
Lithium fizzes gently in water, sodium melts into a ball and whizzes around, and potassium bursts into a lilac flame. What does this show?
- A. All group 1 metals react the same
- B. Reactivity increases down group 1
- C. Potassium is not in group 1
- D. Reactivity decreases down group 1
Question 12
The alkali metals: which statement is NOT true?
- A. Alkali metals react with water to make alkaline solutions.
- B. Group 1 metals are soft enough to cut with a knife.
- C. Lithium is the most reactive alkali metal.
- D. Alkali metals form ions with a 1+ charge.
Question 13
Complete the word equation: lithium + water → ? + hydrogen
Answer
Question 14
Lithium fizzes gently in water, sodium melts into a ball and whizzes around, and potassium bursts into a lilac flame. What does this show?
- A. Reactivity decreases down group 1
- B. Reactivity increases down group 1
- C. All group 1 metals react the same
- D. Potassium is not in group 1
Question 15
The alkali metals: which statement is NOT true?
- A. Group 1 metals are soft enough to cut with a knife.
- B. Sodium is less dense than water, so it floats.
- C. Alkali metals form ions with a 1+ charge.
- D. Alkali metals are found pure in nature.
Question 16
Complete the word equation: potassium + water → ? + hydrogen
Answer
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