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hydrogen

/ˈhaɪdɹədʒ(ə)n/ /ˈhaɪdɹədʒən/

Meanings
noun
The lightest chemical element (symbol H), with an atomic number of 1 and atomic weight of 1.00794.

Examples :

"Hydrogen is the simplest chemical element, with only one proton in its atom. "
element substance chemistry physics science material

Related Words

Illustration collected

collected verb

/kəˈlɛktɪd/

To gather together; amass.

"Suzanne collected all the papers she had laid out."

Illustration experiment

experiment noun

/ɛk.ˈspɛ.ɹɪ.mənt/ /ɪk.ˈspɛɹ.ə.mənt/

A test under controlled conditions made to either demonstrate a known truth, examine the validity of a hypothesis, or determine the efficacy of something previously untried.

"The science teacher conducted an experiment to demonstrate how plants grow in different types of soil. "

Illustration colourless

colourless adjective

/ˈkʌlə(ɹ).ləs/

Having little or no colour.

"The water from the well was surprisingly colourless, almost like air. "

Illustration odourless

odourless adjective

/əʊdələs/

Having no odour.

"They were taken unawares and overcome when the room filled with a lethal, odourless gas."

Illustration carefully

carefully adverb

/ˈkɛːfli/ /ˈkɛɹfli/

Sorrowfully.

"He listened carefully to his mother's concerns, feeling sorrowful about her disappointment. "

Illustration molecular

molecular noun

/məˈlɛkjʊlə/ /məˈlɛkjələɹ/

Any compound having a specified (range of) molecular weight(s)

"The scientist analyzed the molecular weight of the new protein sample. "

Illustration temperature

temperature noun

/ˈtɛmp(ə)ɹətʃə(ɹ)/

A measure of cold or heat, often measurable with a thermometer.

"The temperature in the room dropped nearly 20 degrees; it went from hot to cold."

Illustration demonstration

demonstration noun

/dɛmənˈstɹeɪʃən/

The act of demonstrating; showing or explaining something.

"The teacher gave a demonstration of how to solve quadratic equations. "

Illustration lightest

lightest verb

/ˈlaɪtɪst/ /ˈlaɪtəst/

To start (a fire).

"We lit the fire to get some heat."

Illustration scientist

scientist noun

/ˈsaɪ.ən.tɪst/

One whose activities make use of the scientific method to answer questions regarding the measurable universe. A scientist may be involved in original research, or make use of the results of the research of others.

"The scientist studied the effects of different types of soil on plant growth. "

Illustration chemical

chemical noun

/ˈkɛmɪkəl/

Any specific chemical element or chemical compound or alloy.

"The scientist studied the chemical composition of the soil sample. "

Illustration flammable

flammable noun

/ˈflæməbl/ /ˈflæməbəl/

Any flammable substance.

"Gasoline is a flammable. "