Chemistry Quiz 1

Adam and Owen are working on a physics project where they measure the air pressure in a football. They find the pressure to be 760 mmHg. How many significant figures are in Adam and Owen's measurement?

• 0

• 1

• 2

• 3

Owen and Sophie are working on a chemistry project where they measure a sample of a liquid to be 0.0103 mL. How many significant figures are in their measurement?

• 2

• 3

• 4

• 5

Amiel, Shannon, and Haadin are working in a jewelry shop. They came across a cube of metal with a volume of 1.73 cm³ and a mass of 33.3 grams. They are trying to identify the type of metal to price it correctly. Can you help them figure out what metal it is?

• Gold

• Nickel

• Silver

• Zinc

In Sophia's science experiment, she is measuring the growth of a plant over time. The factor that she is measuring in her experiment is:

• Constant

• Control

• Independent

• Dependent

Sophie has a bag of calcium chloride for her chemistry project. The calcium chloride has a density of 2.50 g/cm3. If Sophie has 218 g of it, what volume of calcium chloride does she have in her bag?

• 87.2 cm3

• 545 cm3

• 87.2 g

• 545 g

Haadin is working on a science project about the structure of a neutral atom that contains 8 protons. He is having a discussion with Zane and Shannon about the number of neutrons and electrons it may contain. Can you help them settle their debate?

• A. It may contain 9 neutrons and 10 electrons.

• B. It may contain 9 neutrons and 8 electrons.

• C. It may contain 8 neutrons and 10 electrons.

• D. It may contain 10 neutrons and 9 electrons.

Ethan and Hannah are conducting an experiment in their local pond. They want to know, "Will the goldfish group together more if a catfish is present?" What is the independent variable (cause) in this experiment?

• Type of predator (catfish)

• Number of goldfish schooling together

• Presence of a catfish

• Type of fish (goldfish)

During a science experiment, Haadin, Amiel, Shannon, Zane, and Hannah were examining a model of an atom. They all agreed on certain characteristics of the atom's nucleus EXCEPT that it

• is positively charged.

• contains nearly all of the atom’s mass.

• is very dense.

• contains nearly all of the atom’s volume.

Owen and Sophie were studying the element boron for their chemistry project. They found that boron has two naturally occurring isotopes – one with an atomic mass of 10.01 and another with an atomic mass of 11.01. Their classmate, Ethan, asked them which isotope they think is the most abundant. What do you think they should answer?

• The one with an atomic mass of 10.01.

• The one with an atomic mass of 11.01.

• Both are equally abundant.

• Not enough information is provided to answer this.

Amiel is studying chemistry and comes across an element with 5 protons, 6 neutrons, and 8 electrons. He wonders what the mass number of this element could be. Can you help him?

• 5

• 6

• 8

• 11