Preskoči na glavni sadržaj
Prijava
Sign up for FREE
arrow_back
Biblioteka

Unit 1 Practice

star
star
star
star
star
Posljednje ažuriranje about 1 year ago
30

Sig Fig Extra Practice

1
1
1
1
1

Element, Compound, Homogeneous, Heterogeneous

1
1
1
1
1

Percent Error, Accuracy, and Percision

1
1
1
1

Density

1
1
1
1

Scientific Method

1
1
1
1

Chemical Vs. Physical Change

1
1
1
1

Matter and Phase Changes

1
1
1
1
Pitanje 1
1.

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

Pitanje 2
2.

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

Pitanje 3
3.

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

Pitanje 4
4.

Round 7843 to 2 sig figs?

Pitanje 5
5.

Round 0.0054832 to 2 sig figs?

Pitanje 6
6.

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

Pitanje 7
7.

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

Pitanje 8
8.

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

Pitanje 9
9.

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

Pitanje 10
10.

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

Pitanje 11
11.

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

Pitanje 12
12.

Which student is the most accurate?

Pitanje 13
13.

Which student is the most precise?

Pitanje 14
14.

Find the percent error for trial 1 for student B?

Pitanje 15
15.

What is the volume of the apple?

Pitanje 16
16.

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

Pitanje 17
17.

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

Pitanje 18
18.

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

Pitanje 19
19.

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?

Pitanje 20
20.

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?

Pitanje 21
21.

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?

Pitanje 22
22.

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?

Pitanje 23
23.

Is the following a chemical or physical change:

Water evaporates from a pot on the stove.

Pitanje 24
24.

Is the following a chemical or physical change:

Baking soda and vinegar are mixed and bubbles form.

Pitanje 25
25.

Is the following a chemical or physical change:

Calcium chloride is added to water and it heats up.

Pitanje 26
26.

Is the following a chemical or physical change:

Dry ice turns from a solid to a gas

Pitanje 27
27.
Pitanje 28
28.
Pitanje 29
29.

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

Pitanje 30
30.

Draw the particle diagrams to show condensation.