Science Topic 4

Front

What is the effect of temperature on the dissolving process of sugar in water?

Back

Sugar dissolves faster in warmer water than in cooler water.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Front

What happens to the particles in a gas?

Back

In a gas, particles are far apart and move freely, allowing them to fill the entire space available.

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition.

Front

What is the difference between a solid, liquid, and gas in terms of particle arrangement?

Back

In solids, particles are tightly packed; in liquids, they are close but can move past each other; in gases, they are far apart and move freely.

Front

Why does sugar remain at the bottom of iced tea?

Back

Because the colder temperature of iced tea slows down the dissolving process of sugar.

Tags

NGSS.MS-PS1-4

Front

What is the role of heat in changing the state of water?

Back

Heat speeds up the physical change, causing liquid water to turn into gas (water vapor).

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Front

What is an example of a physical change in food preparation?

Back

Cutting vegetables is a physical change because it alters their shape but not their chemical composition.

Front

What is the definition of a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

How does stirring affect the dissolving of sugar in a liquid?

Back

Stirring helps distribute the sugar particles throughout the liquid, speeding up the dissolving process.

Front

What happens to the temperature of water when it is heated?

Back

The temperature of water increases as it absorbs heat.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4