8th Science STAAR Review

Front

How many Hydrogen atoms are in 4H₂O?

Back

There are 8 Hydrogen atoms in 4H₂O.

Tags

NGSS.MS-PS1-1

Front

What is the density of water?

Back

The density of water is 1 g/ml.

Front

In which direction is a cold front typically moving?

Back

A cold front typically moves Southeast.

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

Front

Which type of element is described as 'only dull'?

Back

Nonmetals are described as 'only dull'.

Front

How many Hydrogen atoms are in 3(NH₄)₂CrO₄?

Back

There are 24 Hydrogen atoms in 3(NH₄)₂CrO₄.

Tags

NGSS.MS-PS1-1

Front

What is the chemical formula for water?

Back

The chemical formula for water is H₂O.

Tags

NGSS.MS-PS1-1

Front

What is the pH level of pure water?

Back

The pH level of pure water is 7, which is neutral.

Front

What is the boiling point of water at sea level?

Back

The boiling point of water at sea level is 100°C.

Tags

NGSS.MS-PS1-4

Front

What is the process of water changing from a liquid to a gas called?

Back

The process is called evaporation.

Tags

NGSS.MS-PS1-4

Front

What is the main gas found in the Earth's atmosphere?

Back

The main gas in the Earth's atmosphere is nitrogen.