Modeling Matter Amplify

What happens when two substances are mixed?

• They always form a new substance with different properties.

• They remain separate without any chemical change.

• They can either form a new substance with different properties or remain separate without any chemical change.

• They explode and create a gas.

How can you identify an unknown substance?

• By testing its properties, such as its solubility, density, and reaction with other substances.

• By guessing based on its color and smell.

• By comparing it to known substances without any tests.

• By using a microscope to observe its structure.

What is an example of a chemical property?

• Flammability or reactivity with acid

• Color change when heated

• Melting point of a substance

• Density of a liquid

What is the role of observation in scientific investigation?

• Observation is not important in scientific investigation.

• Observation helps gather data and evidence to support conclusions.

• Observation is only used in qualitative research.

• Observation is a method to prove hypotheses.

What is a physical change?

• A change that alters the chemical composition of a substance.

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

• A change that occurs only at high temperatures.

• A change that involves the formation of new substances.

What is a chemical change?

• A physical change that alters the appearance of a substance.

• A process where a substance transforms into a different substance with new properties.

• A change that only affects the state of matter without altering its composition.

• A reaction that occurs only in the presence of heat.

What is a property of a substance?

• A property of a substance is a characteristic that can be observed or measured, such as color, mass, or solubility.

• A property of a substance is its ability to change into a different substance.

• A property of a substance is the temperature at which it melts.

• A property of a substance is the amount of space it occupies.

What is a mixture?

• A mixture is a combination of two or more substances that retain their individual properties.

• A mixture is a single substance that cannot be separated into its components.

• A mixture is a chemical reaction between two or more elements.

• A mixture is a solution that has uniform composition throughout.

Why is it important to test properties of substances?

• To identify them and understand their behavior in different conditions.

• To make them more expensive.

• To increase their weight.

• To change their color.

What are the three states of matter?

• Solid, liquid, and gas

• Solid, liquid, and plasma

• Solid, gas, and vapor

• Liquid, gas, and steam