Science第 112 / 120 题
In chemistry, a substance that donates hydrogen ions and has a pH below 7 is called:
a.A base
b.A salt
c.A neutral
d.An acid
解析
An acid releases hydrogen ions in solution and has a pH lower than 7. Bases, in contrast, have a pH above 7.
免费刷完整 120 道题库 — 无需注册。
同考点相关题目
- Which type of blood vessel carries blood away from the heart?
- What is the largest organ of the human body?
- Which nutrient is the body's primary source of quick energy?
- Which system includes bones, joints, and cartilage that support the body?
- What process do plants use to convert sunlight into chemical energy?
- Which organ filters waste from the blood and produces urine?