Topic 1 Test

Which of the following is a physical property of a substance?

• Flammability

• Melting point

• Reactivity with acid

• Ability to rust

A student has a mixture of sand and salt. Which method would be most effective to separate the two components?

• Filtration

• Distillation

• Evaporation

• Chromatography

Calculate the density of an object with a mass of 50 grams and a volume of 10 cm³.

• 2 g/cm³

• 5 g/cm³

• 10 g/cm³

• 0.5 g/cm³

Which of the following is an example of a chemical change?

• Ice melting

• Sugar dissolving in water

• Iron rusting

• Water boiling

Tags

NGSS.MS-PS1-2

A student needs to convert 1500 milliliters to liters. What is the correct conversion?

• 1.5 liters

• 15 liters

• 0.15 liters

• 150 liters

Which of the following best describes a homogeneous mixture?

• A salad with lettuce, tomatoes, and cucumbers

• A glass of iced tea with sugar completely dissolved

• A bowl of cereal with milk

• A jar of mixed nuts

A block of wood has a density of 0.6 g/cm³ and a volume of 200 cm³. What is its mass?

• 120 g

• 300 g

• 100 g

• 180 g

Which of the following scenarios requires strategic thinking to identify a chemical property?

• Observing the color of a substance

• Testing a substance's ability to conduct electricity

• Determining if a substance reacts with oxygen

• Measuring the boiling point of a liquid

Tags

NGSS.MS-PS1-2

A student observes that a piece of metal changes color when exposed to air. What type of change is this?

• Physical change

• Chemical change

• Both physical and chemical change

• Neither physical nor chemical change

Tags

NGSS.MS-PS1-2

A scientist needs to determine whether a sample is a heterogeneous mixture. Which of the following methods would be most effective?

• Observing the sample under a microscope

• Measuring the sample's boiling point

• Testing the sample's solubility in water

• Weighing the sample