Which state of matter does this particle model represent?

Air escapes from a balloon into a room. Which statement describes its shape and volume?

An ice cream cone becomes runny on a sunny day. What process occurs?

Lava cools and becomes hard rock. What process has occurred?

A rain puddle gradually disappears after the sun comes out. Which process moves its water into the air?

Droplets appear outside a cold glass even though no water was spilled. Which process forms them?

A mothball gradually becomes smaller without forming a liquid. What process explains this?

Water vapor turns directly into frost on a freezer wall. What is this process called?

Use the flowchart. Which pair of processes could take a substance away from, then back to, its starting state?

Pure water is heated in an open pot at normal atmospheric pressure. At what temperature does it boil?

Warm pandesal is placed on a cooler plate. In which direction does energy transfer because of their temperature difference?

What temperature does the thermometer show?

A well-stirred mixture of pure ice and water is heated gently at normal atmospheric pressure. What happens to its temperature while some ice remains?

During which interval on the graph does the temperature stay unchanged?

The boxes contain the same substance. Which model shows the higher temperature?

Water in an ice tray becomes hard inside a freezer. What happens to energy during this change?

To turn water vapor into liquid droplets at constant pressure, must the vapor gain or lose heat?

What supplies most of the energy that moves water from Philippine seas into the air?

Why can shrinking glaciers on land raise sea level?

As warm cocoa cools without changing state, its particles generally ___.

Carlo crumples a sheet of paper without burning it. How should this change be classified?

Why is burning wood different from cutting it into smaller pieces?

Which property remains unchanged when a sugar cube is crushed?

Sugar is heated until it browns and develops a different smell. Which kind of change occurs during browning?

Which event produces a new substance?

Vinegar and baking soda are mixed at room temperature. Which observation best suggests a chemical reaction?

Ana wants to turn water from a thawed ice cube back into a cube. What should she do?

Why does cooling baked bread not restore the original dough?

Which question best distinguishes the two main kinds of material change?

Each group of spheres represents a molecule. Which change to the final model would indicate a chemical change instead of a change of state?

Which statement describes making a mixture?

How should this calamansi juice with pulp be classified?

Which sample has the same composition throughout?

Ben stirs a little salt into a glass of water until it disappears from view. What role does the salt play?

In a drink made by dissolving sugar in water, what is the liquid's role?

A jar contains water and sand that settles after standing. What kind of mixture is this?

Why does cooking oil stay above water after the liquids separate?

Which liquid forms a uniform mixture when stirred into water?

In clean, dry air, which gas acts as the main solvent?

Which pair of elements forms brass?