Ch.1 quiz (Part 1)

Mason, Elijah, and Scarlett are in a science class. They are discussing a subject that involves the study of matter and its transformations. What subject are they discussing?

• Chemistry

• Biology

• Physics

• Astronomy

Liam, Ethan, and Michael are in a science class. Their teacher explains that if a substance they are studying in their lab consists of identical atoms or molecules, it is known as a ​

• Pure substance

• Impure substance

• Heterogeneous mixture

• Homogeneous mixture

Sophia, Emma, and Harper are studying chemistry together. They are discussing where the Law of Constant Composition applies. They list out a few options. Can you help them identify the correct one?

• solutions

• heterogeneous mixtures

• compounds

• elements

Aria, Sophia, and Abigail are studying for their chemistry exam. They are discussing about extensive properties. Which of the following is an example of extensive properties that they might discuss?

• density

• boiling point

• freezing point

• temperature

• volume

Arjun, Charlotte, and Noah are studying for their chemistry exam. They come across a question: 'Which of the following is an intensive property?' Can you help them answer it?

• density

• melting point

• temperature

• boiling point

• all the above

During a science experiment, Lily produced hydrogen gas from water, David noticed the tarnishing of a copper penny, Nora was charging her cellular phone, and they all observed the burning of gasoline. Among these, __ represents a chemical change.

• Lily's production of hydrogen gas from water

• David's observation of the tarnishing of a copper penny

• Nora's charging of her cellular phone

• The burning of gasoline they all observed

• All of the above

James is working on a science experiment where he measures a substance and gets a value of 0.007236. If he rounds this value to three significant figures, __ is obtained.

• 0.0072

• 0.00724

• 0.00722

• 0.00723

Ava, Sophia, and Elijah are participating in a science quiz. They are asked to identify the SI units of length, mass, and time. What should they answer?

• m, g, and s respectively

• cm, kg, and s respectively

• m, kg, and s respectively

• cm, mg, and s respectively.

Benjamin, Henry, and Isla are working on a science project where they need to calculate the density of a metal cube. They found that the cube has a density of 3.337 g/cm³. Can you help them convert this density into kg/m³?

^{Hint. 1 kg = 1000 g and 1 m = 100 cm}

• 3337

• 0.3337

• 3.337

• 0.0003337

During a science quiz, the teacher asked Daniel, Avery, and Nora about the notations for the following prefixes: nano, micro, and giga. Can you recall what they answered?

• 10^-9, 10^-6, and 10⁹ respectively

• 10^-3, 10^-12, and 10⁶ respectively

• 10^-2, 10^-9, and 10³ respectively

• 10⁹, 10⁶, and 10^-9 respectively