General Chemistry Midterm Review

Identify the activity that belongs in the field of chemistry.

• developing medicines

• analysis of a compound

• production of a new plastic

• all of the above

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-3

NGSS.MS-PS1-5

Which of these chemicals is definitely inorganic?

• one that is made of carbon and hydrogen

• one that is made of nitrogen and carbon

• one that is made of nitrogen and hydrogen

• one that is made of carbon and oxygen

Which of the following is not a step for solving a numeric word problem?

• calculate

• conclude

• analyze

• evaluate

Identify the false statement.

• Chemistry plays an important role in efforts to increase the world's food supply and to protect crops.

• Biodiesel is a fossil fuel.

• Potato plants with a jellyfish gene will glow when they need to be watered.

• Chemists are working to develop more pest-resistant and disease-resistant plants.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS4-4

A hypothesis is

• an observation recorded from an experiment.

• a proposed explanation for what is observed.

• a summary of the results of many experiments.

• a well-tested explanation for many observations.

Which of the following is not a part of the scientific method?

• experimenting

• Observing

• proving

• hypothesizing

Identify the false statement.

• A scientific law fully explains a set of observations.

• The scientific method is a logical, systematic approach to the solution of a problem.

• For the results of an experiment to be accepted, the experiment must produce the same results no matter how many times it is repeated.

Which of these steps of the scientific method involves stating a relationship but not proposing an explanation for the relationship?

• observation

• scientific law

• theory

• Hypothesis

All of the following are general characteristics of a substance in the liquid state except

• definite volume.

• able to flow.

• not easily compressed.

• definite shape.

Tags

NGSS.MS-PS1-4

In the chemical reaction: iron plus oxygen yields iron oxide,

• iron oxide is a reactant.

• iron is a reactant.

• oxygen is a product.

• iron is a product.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5