Test
Quiz on Chemical Reactions
Preguntas del test (8)
1What is the most likely PH when you mix acidic milk and alkali egg white?
- ApH2
- BpH6
- CpH7
- DpH14
2What is the effect of putting a burning splint in oxygen?
- AThe flame will get bigger.
- BIt will make a popping sound.
- CNo reaction.
3Give a substance which is almost neutral/ neutral.
- AJohnson's pH 5.5 face wash.
- BFacial wash with a pH of 7.3
- CBody wash with a pH of 10
4Tick the correct word equation for nitric acid reacting with sodium hydrocarbonate.
- Asodium hydrocarbonate + nitric acid = carbon monoxide + water +hydrogen
- Bsodium hydrocarbonate + nitric acid = carbon dioxide + water + sodium nitrate
5Tick the correct chemical equation for the chemical reaction in the clear blue flame.
- Amethane + flame = fire + oxygen
- Bmethane + oxygen = carbon dioxide + water
6Tick the correct word equation for magnesium reacting with air.
- Amagnesium + flame = bright light
- Bmagnesium + nitrogen = magnesium nitrate
- Cmagnesium + oxygen = magnesium oxide
7In which gas does magnesium immediately go out?
- AAir
- BExhaled air
- CNitrogen
- DOxygen
8Why does magnesium go out in a jar of exhaled air?
- ABecause oxygen thins the flame.
- BBecause carbon dioxide contains nitrogen.
- CBecause the air we exhale contains carbon dioxide and carbon dioxide puts out fires.
Información
- Descripción
- A quiz on Chemical Reactions
- Autor
- ellamay947
- Idioma
- English
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