An ionic bond forms between ___

Atoms that have gained or lost electrons

Atoms that share electron pairs

What is a polar molecule?

a molecule with opposite charges at opposite ends

a molecule with an uneven number of protons and neutrons

a molecule with the same charge at opposite ends

Metabolism is associated with living things . Cells are associated with living things . Feedback loops are associated with living things . Gametes, budding, and fragmentation are associated with living things . Evolution is associated with living things .

respond to stimuli and maintain homeostasis

Which of the following is the best description of a covalent bond?

Two atoms sharing electrons so they can complete their outer (valence) shells.

An atom loses one or more electrons to another atom.

The constant movement of electrons and the creation of charge imbalances which bonds two molecules together.

A proton is attracted to the electronegativity of another atom.

Ben makes five paper helicopters with different wing lengths. He drops them the same way from a height of two meters for five trials each. He records the amount of time it takes for each helicopter to fall to the ground. What is the independent variable?

Amount of time it takes the helicopter to hit the floor

Ben makes five paper helicopters with different wing lengths. He drops them the same way from a height of two meters for five trials each. He records the amount of time it takes for each helicopter to fall to the ground. What is the dependent variable?

Amount of time it takes the helicopter to hit the floor

Ben makes five paper helicopters with different wing lengths. He drops them the same way from a height of two meters for five trials each. He records the amount of time it takes for each helicopter to fall to the ground. What are two CONSTANTS? (Select 2 answers)

Amount of time it takes the helicopter to hit the floor

Cindy wanted to find out how the amount of sunlight affects the growth of plants. She placed two tomato plants in 10 inch pots with potting soil and watered them ¼ cup each day. One plant was placed under a cardboard box and one was placed in the sunlight. She measured the growth of the plant each week for three weeks. What is the independent variable?

One plant is in the sunlight and the other is under a box

Each plant was placed in a 10 inch pot

Cindy wanted to find out how the amount of sunlight affects the growth of plants. She placed two tomato plants in 10 inch pots with potting soil and watered them ¼ cup each day. One plant was placed under a cardboard box and one was placed in the sunlight. She measured the growth of the plant each week for three weeks. What is the dependent variable?

Each plant was placed in a 10 inch pot

One plant is in the sunlight and the other is under a box

Cindy wanted to find out how the amount of sunlight affects the growth of plants. She placed two tomato plants in 10 inch pots with potting soil and watered them ¼ cup each day. One plant was placed under a cardboard box and one was placed in the sunlight. She measured the growth of the plant each week for three weeks. What are two CONSTANTS? (Select 2)

Each plant was placed in a 10 inch pot

One plant is in the sunlight and the other is under a box

A water strider can skate along the top of a pond because:

hydrogen bonds result in water cohesion (surface tension)

covalent bonds result in water cohesion

water striders have adapted to take advantage of water cohesion

Unit 1 Test: Chemistry of Life 2025 Test Review

Authored by Brittany Rosch

Biology

9th Grade

41 Questions

NGSS covered

Used 6+ times

Unit 1 Test: Chemistry of Life 2025 Test Review

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

TRUE or FALSE: Measuring a patients blood pressure is quantitive data?

TRUE

FALSE

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which term should be able to be tested based on observable data?

Hypothesis

Constant

Control

None of these

True or False: The Hypothesis contains both an independent and dependent variable?

True

False

Which uses a "IF/Then" statement?

Hypothesis

Control

Constant

Independent Variable

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the best definition of the term “theory,” as it is used in science?

A theory is a guess or a hunch about something that has occurred in nature.

A theory is an explanation for a phenomenon in nature that is supported by a wide range of evidence.

A theory is a hypothesis that uses laws and observation to make an assumption.

A theory is the same as a law in science.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Covalent bonds are significant in biology because ___

they break apart in water.

they do not break apart in water.

an electron is transferred to form the bond.

electrons are shared to form the bond.

Match the following: Terms with there charge.

Neutral

Electron

Negative

Proton

Positive

Neutron

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Unit 1 Test: Chemistry of Life 2025 Test Review

TRUE or FALSE: Measuring a patients blood pressure is quantitive data?

Which term should be able to be tested based on observable data?

True or False: The Hypothesis contains both an independent and dependent variable?

Which uses a "IF/Then" statement?

What is the best definition of the term “theory,” as it is used in science?

Covalent bonds are significant in biology because ___

Match the following: Terms with there charge.

How does an atom become a positively-charged ion?

How does an atom become a negatively-charged ion?

What is the definition of an atoms?

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