dioxide
nounA chemical made when something combines with two atoms of oxygen.
Syllables
3 syllables
Letters
Phonics breakdown
Phonics Rule: Letter D
The letter D makes the /d/ sound, like in 'dog', 'day', and 'dig'. The tongue tip touches behind the upper teeth.
D is a voiced alveolar stop. The tongue tip touches the ridge just behind the upper front teeth, then releases with voice. It reliably makes the /d/ sound in almost all positions.
Tip
D is for dog — and dog starts with /d/!
Examples
Phonics Rule: Open Syllable I (Long I)
When I is the last letter of a syllable, the syllable is open and the I says its name /aɪ/ — like in 'hi' and 'fi-nal'.
This is the open-syllable pattern: a syllable that ends in a vowel leaves it 'open', so it says its long name. Here, a lone I at the end of a syllable says /aɪ/ (hi, si-lent). The I also says its long name before two consonants in the 'ind' and 'ild' families (find, kind, child, mild). The long I sound is also spelled other ways, each its own rule — silent E (bike) or igh (night) — but those are not open syllables.
Tip
Long I says its name — I!
Examples
Phonics Rule: Short O
The letter O makes a short sound, like in 'hot' and 'dog'.
When the letter O appears in a closed syllable, it usually makes the short O sound /ɑ/. In American English, this sounds like 'ah'.
Tip
O says /ɑ/ like 'Ahh!' said the doctor.
Examples
Phonics Rule: Letter X
The letter X usually makes the /ks/ sound, like in 'fox', 'box', and 'mix'.
X is unusual — it represents two sounds blended together: /k/ + /s/ = /ks/. At the start of a word it sometimes makes a /z/ sound (xylophone). At the end of words it reliably says /ks/.
Tip
X says /ks/ — like a fox in a box!
Examples
Phonics Rule: Silent E with I (Magic E)
In the i-consonant-e pattern, the E at the end is silent and makes the I say its name — like in 'bike' and 'time'. Teachers often call this the Magic E.
In the pattern i-consonant-e (like 'bike'), the final E is silent but makes the I say its long sound /aɪ/.
Tip
Magic E makes I say its name!
Examples
Phonics Rule: Letter D
The letter D makes the /d/ sound, like in 'dog', 'day', and 'dig'. The tongue tip touches behind the upper teeth.
D is a voiced alveolar stop. The tongue tip touches the ridge just behind the upper front teeth, then releases with voice. It reliably makes the /d/ sound in almost all positions.
Tip
D is for dog — and dog starts with /d/!
Examples
Phonics Rule: Silent E with I (Magic E)
In the i-consonant-e pattern, the E at the end is silent and makes the I say its name — like in 'bike' and 'time'. Teachers often call this the Magic E.
In the pattern i-consonant-e (like 'bike'), the final E is silent but makes the I say its long sound /aɪ/.
Tip
Magic E makes I say its name!
Examples
What is SnapPhonics?
A phonics reference for teachers, parents and learners. Every English word, broken into the sounds that make it — with audio, syllables, and the rule behind each spelling.
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