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Unit 1 Practice

Last updated 6 months ago
30 questions
Sig Fig Extra Practice
1

How many sig figs are in the following value: 9.30?

1

How many sig figs are in the following value: 0.005?

1

How many sig figs are in the following value: 3400?

1

Round 7843 to 2 sig figs?

1

Round 0.0054832 to 2 sig figs?

Element, Compound, Homogeneous, Heterogeneous
1

Is the following an element, compound, homogeneous, or heterogeneous: Silver?

1

Is the following an element, compound, homogeneous, or heterogeneous: NaCl?

1

Is the following an element, compound, homogeneous, or heterogeneous: Carbon?

1

Is the following an element, compound, homogeneous, or heterogeneous: lucky charms cereal?

1

Is the following an element, compound, homogeneous, or heterogeneous: hot sauce?

Percent Error, Accuracy, and Percision
1

Is the image below show values that are accurate, precise, both or neither?

1

Which student is the most accurate?

1

Which student is the most precise?

1

Find the percent error for trial 1 for student B?

Density
1

What is the volume of the apple?

1

If the mass of the apple is 30g, what is the density fo the apple?

1

If the apple is cut in half,what will happen when it is placed in water?

1

What will the density be when the apple is cut in half?

Scientific Method
1

A scientist is testing If medical marijuana effective for pain reduction in people with chronic pain? They give Group A 1 gram of medical marijuana, they give Group B 2 grams of medical marijuana, and Group C they give no marijuana. Then they measure their pain using a survey on the 3rd day in the morning. What is the independent variable?

1

A scientist is testing If medical marijuana effective for pain reduction in people with chronic pain? They give Group A 1 gram of medical marijuana, they give Group B 2 grams of medical marijuana, and Group C they give no marijuana. Then they measure their pain using a survey on the 3rd day in the morning. What is the dependent variable?

1

A scientist is testing If medical marijuana effective for pain reduction in people with chronic pain? They give Group A 1 gram of medical marijuana, they give Group B 2 grams of medical marijuana, and Group C they give no marijuana. Then they measure their pain using a survey on the 3rd day in the morning. What is a constant?

1

A scientist is testing If medical marijuana effective for pain reduction in people with chronic pain? They give Group A 1 gram of medical marijuana, they give Group B 2 grams of medical marijuana, and Group C they give no marijuana. Then they measure their pain using a survey on the 3rd day in the morning. What is a control?

Chemical Vs. Physical Change
1

Is the following a chemical or physical change:
Water evaporates from a pot on the stove.

1

Is the following a chemical or physical change:
Baking soda and vinegar are mixed and bubbles form.

1

Is the following a chemical or physical change:
Calcium chloride is added to water and it heats up.

1

Is the following a chemical or physical change:
Dry ice turns from a solid to a gas

Matter and Phase Changes
1
_______ is a phase of matter with definite shape. _______ is a phase of matter which does not have definite shape, but it has definite volume. _______ is a phase of matter which expands.
1
When a solid changes to a gas this is called _______. When a solid changes to a liquid this is called _______ . When a liquid changes to a gas this is called _______ .
1

When a gas changes to a liquid, the space between the particles ____________.

1

Draw the particle diagrams to show condensation.