Chemical Change Exam Review 2020-2021 (First Trimester)

What is created when 2 substance combine, but retain their identity?

What is a change that takes place on the atomic level and produces a new substance?

What does an element's location on the periodic table tell us?

What is the chemical symbol for the element Copper?

What is the independent variable?

Which type of heat transfer occurs with direct contact between the heat source & the object?

How many atoms of oxygen are in the formula 2Fe₂(SO₃)₃ ?

What is the ability to transfer electricity?

What type of heat transfer uses electromagnetic waves to heat the object?

What is involved in chemistry?

What is the gas product of photosynthesis?

How can you determine if 2 objects are made of the same substance?

What is the atomic mass of the element Lithium (Li)?

What makes an atom's charge neutral?

Air is ...

What is the amount of matter in an object?

The freezing point of matter is the same as its ...

If a substance changes its state of matter, what has taken place?

Is the oxidation of iron a physical or chemical change?

A polymer is a chain of _____________ in a repeating pattern.

An acid is known to taste ____.

What are constants?

Metals have which of the following property, or properties in common?

Why are elements called the building blocks of matter?

What is found in the nucleus of an atom?

Which is less dense, hot tea or cold tea?

How many protons are in the element Boron (B)?

You have a toy with a volume of 15 cm³  and has a mass of 60 g.  What is its density?

What is a chemical change that causes matter to be worn away?

Which of the following is NOT an example of a synthetic polymer?

The nail on your deck has rusted.  Which BEST describes the change?

How many neutrons are in a sodium (Na) atom?

What is the dependent variable?

If a substance changes pH, this indicates a ___ has taken place.

What forms when atoms share electrons?

When salt is mixed with water, what BEST explains what happened to the salt molecules?

What is anything that has mass and volume?

Which of the following is NOT a reactant of photosynthesis?

What are the products of respiration?

Is the evaporation of dry ice a physical or chemical change?

Item 1 has mass of 2g/volume of 1cm³.  Item 2 has a mass of 4g/volume of 4cm³.  Which is true? 

What is the control of an experiment?

Which is evidence of a chemical change?

What are 2 or more different atoms bonded together?

What are the products of photosynthesis?

How are elements different than compounds?

The Law of Conservation of Matter means that...

What type of heat transfer occurs with an imbalance of temp, altering a fluid's density?

What type of bonding takes place when Sulfur gives 2 electrons away to Oxygen?

What are 2 or more like, or unlike atoms bonded together?

How are chemical properties identified?

Which equation does not follow the Law of Conservation of Matter?